rFactor 2: The Big Interview (Part 3)

Paul Jeffrey

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rF2 4.jpg

Part 3 of our Studio 397 / rFactor 2 interview with Marcel Offermans is now live.


If you missed our the first two instalments of our new interview, you can check out Part 1 here, and Part 2 here.

Part 3...

RD: (question from @Martin Fiala) - There's been a lot of talk about the upcoming UI, but very few mentions (if any) lately of the new plugin system that was supposed to solve the issue of plugins not being able to draw to the screen in the DX11 version. Is that still planned? Is it considered part of the new UI? If not, are there at least some in-game replacements for the most popular plugins planned, like proper track map or the very badly needed FFB meter?

MO: Allowing plugins direct access to DX9 was causing a lot of issues, which is why we took out this ability with DX11, with no plans to bring it back in the same way. A new way over overlaying information will be part of the new UI, although we are not yet confident that this will make it into the first (beta) release. That said, you probably have seen already that we can render track maps in-game in the new UI, so I’m confident we will see that feature return. Same probably goes for the FFB and pedal meters.

RD: (question from @Martin Fiala) - Are there any plans to improve the sound engine that seems to be basically limited to a very simple on/off reverb and to stereo only sound?

MO: Yes. The current plan is to look at this starting probably Q4 of 2019. I anticipate this work to go well into 2020 though, so you will have to be patient!

RD: (question from @Peter Koslowski) - All I need is 3D grass. Will all new and old tracks (Zandvoort already has it) be equipped with it?

MO: It is highly unlikely that we will retrofit the type of 3D grass that was used at Zandvoort to all other tracks. There are a few reasons for that. First of all, placing this type of grass right now is quite time-consuming. The second reason is that we are not yet satisfied with the overall effect. The third reason is a more technical one, we lack a few bits and pieces to really end up with nice looking 3D grass. So I guess the good news is that this is something our artists and graphics developers actively discuss. We have not decided on an exact implementation yet.

RD: (question from @leclettico) - There's a plan to manage a custom championship with the AI (so, with the same AI drivers) without having to create copy of liveries and drivers and using LogAnalyzer to looking into results and standings?

MO: This is planned as a “second stage” of our new competition system, the first stage being online races against humans. That said, I do think LogAnalyzer did an amazing job on their system.

rF2 1.jpg


RD: (question from @leclettico) - Rain and AI. There will be improvements in the managing of pit in case of rain?

MO: Yes. A few of your fellow community members asked a similar question and it’s certainly one of the areas where our AI can and should improve.

RD: (question from @Jonny Austin) - Many sim racers praise the handling in RF2. What are the other unique features that should make me buy RF2?

MO: I think by now we are the only “open” racing simulation that is still under active development, meaning you can build your own cars and tracks and customize a lot of aspects of the simulation. Also, we have fairly robust on-line play with intelligent prediction technology to ensure that even with some latency, we can still allow very close racing without (m)any surprises. Couple that to a dynamic track and weather system and I’m sure you will keep finding new racing challenges for a long time.

RD: (question from @Alexandr Meshkov) - Is there Portland International Raceway still in development? No news for 1.5 years about it in Roadmaps

MO: It was in development as we anticipated using it for some specific project. That fell through, and we also were not yet happy with how the track looked at the time so we decided to put it on hold and focus our resources on other projects. Does that mean we won’t ever finish it? Probably not. It’s just that right now there is no news about it.

RD: (question from @Alexandr Meshkov) - What is the dirt maps and how it works? I remember that was a word about that feature when Sebring releases but no explanation since that.

MO: Yes, I spoke too soon. We implemented dirt maps for Sebring and I think it really helped the look of the track, but when we evaluated the technology and how we used it after building that track, our artists and graphics developers agreed that we wanted to make further changes to the system before “handing it over” to modders. Which is why you did not hear much about it yet, as we’re still working on a better version.

RD: (question from @The Walker) – When do you expect to release the Tatuus Pack?

MO: Due to my lack of speed in answering all your questions, this pack by now has been released. Do you like it?

rF2 2.jpg


RD: (question from @The Walker) - Also, but this is just curiosity, I read somewhere like in 2017 that rF2 had the license for the Reynard 95i car. They never got released, right?

MO: Correct, and I don’t think the car was ever modeled either. It was one of the licenses we “inherited” from ISI and one of the issues we had with those at the time was that we were really getting a lot of feedback from our community to go for series or classes of cars instead of individual ones (unless those were “cup” classes of course). So we decided not to do anything with some of those licenses.

RD: (question from @SLimJim70 ) - As someone who works constantly changing shift patterns, do they ever plan to incorporate 'drop-in/drop-out' online racing?

MO: Yes, that is planned as part of our competition system, where we intend to host events that contain multiple races where you can attend one or more of them in a period of multiple days, which should accommodate people with changing or unpredictable schedules.

RD: (question from @VernWozza) - Are there any plans to do a thing with the damage model in the sim. Loving what iRacing have planned, I would love to see something similar in rf2.

MO: Right now, no. I like what iRacing is doing to their damage model, so we’ll definitely keep an eye on that development but for now we have nothing planned in that area.

RD: (question from @Cristian Luis) - Will the new UI allow the possibility to listen to music while in the main menu? Just like in rF1?

MO: I don’t know yet. We have the technology to play music files, but the tricky part is choosing music everybody likes (and keeps liking even if he plays rFactor 2 for a long time). That is hard, and possibly expensive, considering we would need to license that music too. So would that really be the best way for us to invest our money? I’m just not sure. Nothing stops you from listening to music while you’re driving and/or clicking around in the menu system. Our current UI allows you to add music. We just don’t see a lot of people doing that.

RD: (question from @tswest) - Will there be more tutorials and assistance to allow third party builders to build tracks for rF2 like it has been for rF1. I am a track builder and would like to see more Building tracks in rF2 for DUMMIES tutorials. At the moment there is very little info and I get the impression Studio 397 wants to keep everything for themselves.

MO: If we gave you that impression, that is certainly not correct. The tools we provide to track and car builders did not fundamentally change much. We did upgrade them to 64 bits and newer versions of 3D Studio Max. With those in place, I think building tracks is mainly a matter of experience in 3D modeling in general and, on top of that, a lot of hard work. As engines become more advanced and faster, the level of detail for tracks raises, which has the downside that it becomes harder for people to build a whole track from scratch. We now use a team of 3 to 4 people, all seasoned professionals, to build a track and still it takes us many months, so I can only imagine how long it takes someone by himself who has a daytime job on top of that. But let me reverse the question, what kind of tutorial are you looking for, as there are certainly a ton of tutorials out there already about all aspects of 3D modeling and a lot of those apply to track too, so I guess the type of information we would need to add is specific information about our tools? Or am I overlooking something here?

RD: (question from @Rui Santos) - Any plans to update the wet weather physics, racing line, water on track, etc.?

MO: We are aware that our grip levels on a wet track are not always correct, so we do intend to tweak those. Water, rubber and marbles on the track are already quite accurately modeled through our RealRoad system so I think we’re in a good place there and we’ll keep expanding it.

rF2 3.jpg


RD: (question from John Eric-Saxen) - Across all industries we have recently seen a lot of buzz around AI and machine learning based on big data. However, in racing simulators the development of AI has stagnated at a very basic level. Could we possibly see a form of "neural AI" based on learning in some form in rF2 in the future? This could reduce the time and effort required to tweak the AI to work well with various car classes?

MO: This to us is certainly a very interesting research topic. As you might know our parent company, Luminis, is involved in cloud technology and we also have specialists in AI and machine learning. What’s holding us back right now is that we first need to finish our competition infrastructure so we can more easily collect enough data for such algorithms to work effectively. But this is without a doubt the future of AI in simracing (and a very nice question, thank you)!

RD: (question from @Travis) - will we have a return of the dev blogs? Michael Borda's blog was excellent; are these to be continued at some point?

MO: I certainly hope so! With the Brabham BT44B finished, I guess we need to find a new topic for a series of blogs. And maybe some of our other physics engineers can chime in too, as it’s not just Michael doing all the great work in that department.

RD: (question from @pcraenme) - Are you thinking of introducing something like a season pass/one year membership, so you pay all the upcoming DLC content for a certain period (e.g. a whole year) in advance, but for a cheaper price then having to buy all the individual DLC's when they come out?

MO: Such a system is currently impossible to implement with the features Steam offers us. We will keep aggressively pricing bundles and participating in Steam sales. That model works a lot better. That said, Steam might add features in the future that help with “season passes” so please also relay such requests to Valve as they tend to listen to their users (if enough of them want a certain feature).

RD: (question from @Terry Rock) - Will there be any emphasis placed on setting up any RF2 dedicated servers, strictly for pick-up racing with original content?

MO: It’s our intention to host races for all kinds of people through the competition system, so I think you’ll find both pick-up style races and championships there. And obviously we’ll keep a close eye on what our community wants to drive and adjust our schedule accordingly.

RD: (question from @mantasisg) - Better wet surfaces simulation, viscous and dynamic hydroplaning

MO: I think there are two things we can improve when it comes to wet surfaces. The first thing are the grip levels of parts of the track that have a lot of rubber and marbles on them when the track gets wet. We are aware that those are not totally right yet. The second thing is, as you mention, aquaplaning, which is currently missing. We are still studying the latter to see how we can best implement that in our model, because if we do it, we want to make sure it’s physically accurate.

rF2 6.jpg


RD: (question from @mantasisg) - Better gearboxes, drivetrain simulation. Will it happen ?

MO: Right now we are still prioritizing the UI and competition system, but once that is in place we will certainly free up some resources to work on these aspects. Some of you might know that, before forming Studio 397, some of us were involved in the development of Automobilista for Reiza Studios, where we implemented some of these features in the rFactor 1 engine. Of course we want to take the simulation of the drivetrain and gearbox to the next level as the rFactor 2 engine offers a lot more possibilities to model such things.

RD: (question from @mantasisg) - More graphics (besides PBR) improvements. Will it happen ?

MO: Yes, certainly, for us it is very important to get the basics right first, which means improving our lighting model and using PBR based rendering. Once that is in place, it opens the door for more consistent improvements. Most likely you will see us improving cockpits, a very important aspect since that’s your daily office as a racing driver, but also address things like shadows and our particle systems.

RD: (question from @mantasisg) - More variety in cars content, more classics, more range in years, more range in vehicle types. Will it happen ?

MO: I would say it is already happening, but it will also be fair to say that we won’t ever be able to cover every form of racing out there, so there’s a nice task for our community as well to fill in some of the gaps. And if those gaps turn out to be popular, we can even look at working with modders to go after official licenses, etc.

RD: (question from @Boby Kim) - Nowadays the community wants graphics instead of physics as graphics are directly visible, and thus understandable, and physics are not: a direct outcome of Reiza going Madness=they will receive a huge chunk of the Project Cars community who are not interested in physics layers. How do you stand up against this change with rF2 in the future as more and more people choose for graphics and content instead of true simulation?

MO: Interesting question. Obviously I can’t answer on behalf of Reiza Studios, but I’m sure they had good reasons to make the choices they did. I think honestly with our new DX11 engine, if you compare it to the DX9 engine we started out with, we’ve already improved a lot. In some cases even well beyond what the competition has, such as our car paints that feature up to six different unique material regions that can be different on each individual car. We are far from done though, graphically, so I expect us to stand our ground. That said, from experience, a good physics engine is what keeps people coming back in the long run and I think we are really doing well in that department.

RD: (question from @DriftManiaX) - Will they ever fix all the bugs instead of releasing new paid content?

MO: I like to believe we’re doing both. No software is free of bugs though, so I guess the formal answer is no, we won’t ever be able to fix them all. We’ll definitely give it our best shot though, balancing both adding new stuff (features, paid and free content) and fixing bugs.

rF2 5.jpg


RD: (question from @FS7) - Will rF2 have an option to enable trackmap on the hud?

MO: As you might have seen, we already have a trackmap that we can enable in our new broadcast overlays, so the technology is there to also add it to the HUD. If you ask me personally I don’t think a trackmap is a very “sim” like feature, but I guess a lot of people do ask about it so I’ll answer this with a firm “yes”.

RD: (question from @formidable) - Is expected the release from a classic Le Mans layout (70-80-90), plus some Group C or LMP1 Cars?

MO: Right now we don’t have plans to release classic versions of Le Mans, doing the current one was already a huge project and we intend to provide a few more updates for that one. Group C cars are a personal favorite, so who knows. LMP1 cars are unlikely at this point as they are slowly dying and not yet “classics”, like Group C.

RD: (question from @Dean Hayes) - Given that your currently working on laser scanned versions for both Lemans and Nurburgring is it safe to say that Spa is next?

MO: It’s a lovely question, but one I can’t answer right now.

RD: (question from @Will Mazeo) - I'd like to know about more pit stop work… Mandatory pits with pit window (u got 2 official GT3 packs, this is a must have) / Min pit timer stop (like ADAC GT) / Larger pit stalls as people requested in the forums / Pit stop animations at some point?

MO: So that’s a few questions. I think our plugin system is powerful enough for leagues that want to follow the rules of specific series to implement those (mandatory pit window, minimum time in the pitlane). The larger pit stalls I am not sure about. Why would you want those? I hear a lot of people commenting they would like more pit stalls rather than less so I’m not sure if that makes sense. Finally the pit stop animations, those are hard to do for arbitrary types of cars and series regulations and I have not seen a single game that has done this for all the cars we have. If you limit yourself to a single series, you might be able to pull this off, if you need to solve all the cases, this becomes a very expensive project. So I don’t see this happening until there are better animation systems we could easily integrate that make it possible to implement “smart” pit crews that don’t require extensive motion capture animations.


RD: (question from @ilema) - Drift content + drift tracks + drift scoring system? Possible?

MO: I don’t believe there is anything fundamentally blocking people from making cars or tracks for drifting. Now I’m not super familiar with the drift scoring system. From the few races I’ve seen it’s mostly jury based, right? I am not sure how we would translate that into code. If you have an idea, you can certainly write a plugin that does that. If the question is, will we make drift cars in the near future? Probably not.

RD: (question from @pcraenme) - Can track loading times be improved, since rF2 is the slowest by far when it comes to loading a track?


MO: Our loading is currently done on a single core, and I think the reasoning was that loading times will mostly be I/O (disk speed) bound anyway. Now if that is still true in these times, remains to be seen. It’s an area we have not investigated a lot, but you’re not the first to suggest this so I’m sure at some point we at least will want to analyze better what the slowdown is. One reason I know and that is that our tracks are probably some of the largest ones around.

RD: (question from @A man with a Harmonica) - Do you intend to fix the erratic and often bizarre AI behaviour on wet track where they pit every lap and are either too fast or excruciating slow


MO: Yes, we would like to improve those situations, making AI more aware of the cost of changing tyres all the time versus running on a track with a certain wetness using the wrong. Some of these issues are triggered by starting in the rain but on a dry track. That confuses them. It’s raining so they start on wets, and when they start driving they think the track is too dry for them and they go to slicks only to go back to wets a short while later. Stuff like that I am sure we can improve on.


Part 3 is done! Stay tuned for our fourth and final instalment soon!

rFactor 2 is a PC exclusive racing sim from Studio 397 - Available now.


Check out the rFactor 2 sub forum here at RaceDepartment for the latest news and discussion regarding this excellent sim. Like your racing hard and fair? Join in with our rFactor 2 Racing Club for all your eSport racing fun! Oh, don't forget we like mods to, with our own rFactor 2 Modding Forum for you to enjoy!

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Just passing through and saw this comment.
I guess you already know this @melanieuk but for anyone else reading this and wondering: anybody who sees something that the mods should remove (including trolling) should just hit the report button. Mods don't always see the dodgy material themselves.
For the avoidance of doubt, there are no special rules about tolerating nonsense in PC* threads ;):thumbsup:
the biggest troll in RD and other sim forums shouldn't pay attention or parma'ban!

If I am trolling, please delete my account.

 
  • Deleted member 909406

Dear Sirs, my application for removal is already being considered.
Very happy for you. I am always with you.
 
Hmmmmm...


Maybe Codemasters is not as arcade/simcade as people tend to portrait it.

(to the rest of the community: please, no ad hominem).

With apologies for contributing to take the thread further off-topic, but just to comment briefly on this.. I´d actually agree with the essence of the argument - Codies´ F1 series is a better F1 simulation than given credit for and not inferior to the F-Ultimate all things considered. But all the video basically does is compare performance of the two sim cars as a gauge of realism, which isn´t a very in-depth way to analyse the topic.

Generally speaking, most would probably agree a sim can be considered a sim from the number of real-life variables it simulates and how accurately it simulates them. The so-called hardcore sims generally simulate (or are thought to simulate) a wider range of such variables, specifically in vehicle dynamics such as aerodynamics and tire model which can (if done right) result in a deeper, more accurate driving experience relative to another racing game or sim that simulates less of such variables.

Performance gauging is an important way to verify the overall accuracy of the simulation but accurate performance in no way ensures accurate simulation - it´s actually the easiest thing to just tweak tire grip, aero and engine power to achieve more accurate performance in a way that makes it look accurate - hence the abundance of "reality check" racing game videos which demonstrate pretty much all modern racing games do a fairly good job at that. The issue is how they get to that result and how many variables they accounted for to get there.

To mention a couple of significant ones in this particular comparison: Interlagos has a significantly high altitude about 800m over sea level, that affects air density which in turn affects the car´s downforce, drag and engine power. Interlagos is also often warm during the F1 weekend - higher temps also reduces air density which further reduces aero and engine performance. These two variables alone can add up to anywhere from 10 to 15% overall performance loss depending on the car and engine.

AMS1 does not simulate air pressure variation, it doesn´t simulate wind effects and only superficially simulates ambient and track temperatures - it´s close to ideal weather conditions at all times so it stands to reason that a car would be faster around Interlagos than its real counterpart if the physics was otherwise accurate (although the F-Ultimate still almost certainly has a bit too much grip and downforce, not to mention lack of proper hybrid simulation).

If the Codies F1 game simulate those variables correctly then they surely deserve credit as a racing simulator; if not, their relatively more accurate performance does not mean a better simulation and it may actually count for the opposite. Either way, all these variables and a lot more ought to be factored if you really want to gauge simulation realism. And we´re not even talking about track variables (accuracy, grip levels) yet..

Not such a brief comment in the end, but there you have it :p
 
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This was by far the best interview. The most questions about technical core advancements in A.I model., wet weather model, realroad model, sound engine, damage model etc. That's more like it (although I didn't like all the answers) :)

RD: (question from @SLimJim70 ) - As someone who works constantly changing shift patterns, do they ever plan to incorporate 'drop-in/drop-out' online racing?
I think this will benefit, and is important to, 90% of people, not just those with constantly changing shift patterns. I've never seen any videogame, in any industry, where there is such a ridiculously high percentage of locked servers (presumably mostly for league-racing) as I do in AMS and RF2. On top of that, so many servers aren't running stock content (made slightly more convenient in RF2), and on top of that there just aren't generally a lot of players online in the first place, and the servers that do have people, well, as I said, probably 40-70% of them are locked :mad::mad::mad:

Those 3 combinations literally mean the most frustrating and difficult 2 videogames to play online in videogame history. It's not just about "constantly changing shift patterns" it's about having a "normal" life. How many people in this already niche market want to be in a position where they must schedule a specific time of their day/life to play a videogame? Most people play a videogame when they feel like it, they don't say, "OK, tomorrow at 7:35 PM I have to play a videogame" or "sorry friend, I have to leave your birthday early because I have to play a videogame at 9:00 AM tomorrow morning." Sorry but this whole mentality is one of the main issues with online play in simracing especially AMS and RF2.

And for those running leagues, can't you unlock your servers throughout the week and only lock them when it comes to the official race weekend stuff (official qualifying, race, etc.)? At least those in the public looking to play can enjoy some good sessions with you all. I was in a league for maybe 3 or 4 races many years ago and they used to keep all their servers open to the public, nightly practice sessions, even practice quali and races. They would only lock the servers when the "official" sessions happened. I don't know why everyone has to have such an elitist mindset when it comes to servers in the simracing multiplayer community.
 
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With apologies for contributing to take the thread further off-topic, but just to comment briefly on this.. I´d actually agree with the essence of the argument - Codies´ F1 series is a better F1 simulation than given credit for and not inferior to the F-Ultimate all things considered. But all the video basically does is compare performance of the two sim cars as a gauge of realism, which isn´t a very in-depth way to analyse the topic.

Generally speaking, most would probably agree a sim can be considered a sim from the number of real-life variables it simulates and how accurately it simulates them. The so-called hardcore sims generally simulate (or are thought to simulate) a wider range of such variables, specifically in vehicle dynamics such as aerodynamics and tire model which can (if done right) result in a deeper, more accurate driving experience relative to another racing game or sim that simulates less of such variables.

Performance gauging is an important way to verify the overall accuracy of the simulation but accurate performance in no way ensures accurate simulation - it´s actually the easiest thing to just tweak tire grip, aero and engine power to achieve more accurate performance in a way that makes it look accurate - hence the abundance of "reality check" racing game videos which demonstrate pretty much all modern racing games do a fairly good job at that. The issue is how they get to that result and how many variables they accounted for to get there.

To mention a couple of significant ones in this particular comparison: Interlagos has a significantly high altitude about 800m over sea level, that affects air density which in turn affects the car´s downforce, drag and engine power. Interlagos is also often warm during the F1 weekend - higher temps also reduces air density which further reduces aero and engine performance. These two variables alone can add up to anywhere from 10 to 15% overall performance loss depending on the car and engine.

AMS1 does not simulate air pressure variation, it doesn´t simulate wind effects and only superficially simulates ambient and track temperatures - it´s close to ideal weather conditions at all times so it stands to reason that a car would be faster around Interlagos than its real counterpart if the physics was otherwise accurate (although the F-Ultimate still almost certainly has a bit too much grip and downforce, not to mention lack of proper hybrid simulation).

If the Codies F1 game simulate those variables correctly then they surely deserve credit as a racing simulator; if not, their relatively more accurate performance does not mean a better simulation and it may actually count for the opposite. Either way, all these variables and a lot more ought to be factored if you really want to gauge simulation realism. And we´re not even talking about track variables (accuracy, grip levels) yet..

Not such a brief comment in the end, but there you have it :p
Yes. One thing F1 games don't do yet (and i do consider them sims) is the downforce effect on a car. Car dynamics don't change (or change very little) with speed. It is especially noticeable with braking and fast changes in direction. I haven't played AMS in a while (no VR) but the formula ultimate was a blast! I could feel what the car was telling me even if it is a bit too fast. In the f1 games I can't enjoy them that much as a slight press of the brake pedal causes my wheels to lock even if I am doing 200mph and the car feels sluggish in fast direction changes getting understeer even at speed. Sure I can tune out the understeer but I can't see it disappear the faster I go. That is what makes me say that AMS is a better sim than the f1 games regardless of performance.
 
Gutted to hear that they will leave the community to create its own drift cars.
How are they supposed to do it properly if they don't have an upto date road tyre to work from, at least just do one official drift car that's not encrypted so the drifting modders have something to work from.
Just bought ac, and I really think it's only fair if S397 release an official drift car so that large drifting community have a proper car to enjoy, ac is quite arcade if you ask me
 
I don't think there is anything magical to creating a car that will drift. Just look at how they make cars drift in real life and apply the same modifications to one of our cars (there are plenty that are not encrypted).

Do they have road tyres though or are they racing slicks, I personally think we could pinch a lot of people from the ac drifting community, if they had a proper car to play with here, thanks for the reply though, I know you're busy enough
 
I don't think there is anything magical to creating a car that will drift. Just look at how they make cars drift in real life and apply the same modifications to one of our cars (there are plenty that are not encrypted).
I don't agree. It's a lot about the core physics engine as well (physics engine, tyre model even the ICE model can influence it). Drifting in every game/sim is different not just from a FFB point of view or even driving in general but from simply viewing of the car behaviour.

I've not been able to replicate the following in any sim however I can, by farrr, come closest to the following in Netkar Pro and Live for Speed (and the most difficult in iRacing and ISI/rFactor engine based sims like AMS, RF1, RF2, etc.). I've also done the following in real life quite a few times (although admittedly in more forgiving cars like F2000 / Skip Barber type cars, not F3s like the following video):
Lots of things to notice in that video:

- big angles

- lots of control at big angles

- when the car stops increasing it's oversteer angle, it doesn't do a quick (and often seeming too-early) snap-back-to-centre but instead a) the angle can be controlled, b) the angle can be further increased with further throttle and then more steering correction to make up for the increased throttle and oversteer angle

- when the oversteer angle does decrease (car straightening out) it decreases controllably especially if the driver is modulating the throttle (rather than a sudden and often seemingly early-out-of-nowhere snap back to centre)

- when the driver adds throttle while already in the slide, the car doesn't suddenly snap out and, also, the revs don't suddenly skyrocket instantly to redline as if all grip was suddenly lost or as if the car suddenly gained 10x the amount of torque it would normally, instead the revs go up slowly because there is still grip/friction to overcome even during oversteer/wheelspin

- notice how, often, in the middle of the slide, the driver adds a nice little "kick" of throttle but, when the kick of throttle is added, the oversteer does not increase and neither does the wheelspin. Instead, the kick of throttle adds torque and weight transfer to the back helping stabilize and add grip back to the rear but importantly without increasing the slide or wheelspin in any way (drivers do this even in F1, even in F3.5 cars in the rain). Example @ 0:13.

- the driver, in the last part of the slide can often floor the throttle at or near 100% but, again, the revs don't skyrocket to redline as if all grip was suddenly lost or the car suddenly gained mass amounts of power, instead, the revs do rise but in a controllable manner as you can almost sense that the tyres want to grip and it's almost a grip/slip/grip/slip rather than just massive slipppppp while the revs bounce off the rev-limiter. Example 0:58 - 1:01, 1:07 - 1:09, 1:22 - 1:24.

- also, notice the car always continues, for the most part, on it's originally trajectory from before the slide occurred? While applying opposite lock and also while reducing opposite lock (when slide is decreasing and car straightening out) the vehicle keeps on naturally heading for the outside of the corner

That video above has general fundamental oversteering behaviour concepts which are in all cars from a road car to a Formula Truck to an F1 to a Stadium Supertruck to a Prototype to GT. All cars, car setups, tyres, etc. can obviously make things worse or better - and there are situations where cars do snap-spin and of course don't oversteer as gently and easily (nor as big an angle) as in that video - but the general dynamics are present in that video and quite different to most sims (especially iRacing and ISI/RF physics engine).

P.S. I'm not neccessarilly talking specifically about purpose-built drift cars but rather general physics during rear slide angles and wheelspin.
 
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