Misc RasmusP's LUTs for G27/29 and DFGT 2.0

[RasmusP]

Ok, so yes I tried installing the LUT for the g923, everything works nice except that the moment I let go of the steering wheel it starts vibrating heavily and living its life. I tried manually changing the first value in the .LUT, but it didn't help.
Could you take a look at my settings in the game? Maybe I have something wrong set there

Hi,

I couldn't really say anything about the G920 LUT working great with the G923 or not and I forgot that created some G923 LUTs a few pages back, sorry.

About your settings:
When using Range Compression above 100%, you need to reduce the gain! Range Compression increases the gain. It basically boosts lower forces, while keeping high forces from clipping.
At 300%, you probably need to reduce the gain to 50-70% to stop the shaking.

The first value in the LUTs is really about "vibrating". Which means the wheel standing still but you feel and hear some vibrations.
What you mean is shaking or "oscillating", which isn't related to the fist value and happens with all wheels when using too high gain.

Report back if that helped

Ofc you could also reduce the Range Compression to 100-130% and keep the rest as it is!

 

[turekede]

I will change the settings immediately and let you know. Anyway, could you please tell me if FFB Tweaks is worth the trouble? That is, in my case, should I reduce GAIN but leave FFB Tweaks or not bother with it and look for the best settings for myself?


Okay, so I tried the settings from FFB Tweaks on/off (reduced to 100%). On both settings I didn't notice much difference. At certain speeds, the steering wheel continues to start bouncing from left to right. At this point the settings look like this, FFB tweaks off

So really my only problem at the moment is this strange bouncing of the steering wheel, other than that everything works great and gives me driving satisfaction

 

[RasmusP]

could you please tell me if FFB Tweaks is worth the trouble? That is, in my case, should I reduce GAIN but leave FFB Tweaks or not bother with it and look for the best settings for myself?

I sadly can't tell you how the Range Compression feels with a G923. I'm using a Fanatec CSW 2.5 since 4 years now and nobody I know has a G923
On the Fanatec wheel, Range Compression feels quite cool, but it's not really needed, no.

It just boosts low forces to feel a bit stronger, but it can cause oscillations, like you're having.

I would keep it at 100% (off) for now. The new gyro isn't really needed for weaker wheels like Logitech either, so you can disable the whole FFB Tweaks Extention.

Okay, so I tried the settings from FFB Tweaks on/off (reduced to 100%). On both settings I didn't notice much difference.

That's definitely weird. 300% causes MASSIVE shaking on my wheel.
But anyway, turn off FFB Tweaks and maybe try the G920 LUT or the "normal" G923 LUT from the post you got the "stronger" one from.
Maybe just the "stronger" one is causing the shaking. It was meant to feel stronger but it might cause shaking too.

https://www.racedepartment.com/threads/rasmusps-luts-for-g27-29-and-dfgt.139869/post-3535696

Or maybe try the weaker v1:

https://www.racedepartment.com/threads/rasmusps-luts-for-g27-29-and-dfgt.139869/post-3533865

 

[OnlyHaunted]

In "Assetto_corsa.ini" should I have "ENABLE_GYRO=1" or "ENABLE_GYRO=0.0"??

 

[RasmusP]

In "Assetto_corsa.ini" should I have "ENABLE_GYRO=1" or "ENABLE_GYRO=0.0"??

0
0.0 or just 0 doesn't change anything.
You can also uncheck the gyro setting in content manager though:

Bottom eight corner: enable experimental settings - > uncheck gyro.
It's the same as setting it in the ini to 1 or 0.

I do recommend using the ffb tweaks extension from csp though with default settings BUT the gyro setting ACTIVE.

 

[wingzero30]

0
0.0 or just 0 doesn't change anything.
You can also uncheck the gyro setting in content manager though:

Bottom eight corner: enable experimental settings - > uncheck gyro.
It's the same as setting it in the ini to 1 or 0.

I do recommend using the ffb tweaks extension from csp though with default settings BUT the gyro setting ACTIVE.

Hi there RasmusP,

hope you are all good. I tried to walk through every post and reply, and found it's impossible.. too much.

I hope you can tell me which G923 LUT file people are happy about, and which folder shall I put it in? Huge thanks!

 

[RasmusP]

Hi there RasmusP,

hope you are all good. I tried to walk through every post and reply, and found it's impossible.. too much.

I hope you can tell me which G923 LUT file people are happy about, and which folder shall I put it in? Huge thanks!

I sadly only know about 3 users here that use the G923 LUTs and one had issues with the LUT the other one liked most.

But here are the 3 LUTs again in one post.
You need to delete the ".txt" at the end. It's a zip file with the AC folder structure and the 3 files in the lowest layer.
Documents\Assetto Corsa\cfg\
-> LUTs into that folder

Then I hope you're using Content Manager?
Just start/restart Content Manager and you should be able to select the LUT to try it

Should look like this for you then:

CM Axis:

CM Force Feedback:
Important if you're drifting: Set Slip effect to 0% !!!

CSP -> FFB Tweaks:

 

[wingzero30]

I sadly only know about 3 users here that use the G923 LUTs and one had issues with the LUT the other one liked most.

But here are the 3 LUTs again in one post.
You need to delete the ".txt" at the end. It's a zip files with the AC folder structure and the 3 files in the lowest layer.
Documents\Assetto Corsa\cfg\
-> LUTs into that folder

Then I hope you're using Content Manager?
Just start/restart Content Manager and you should be able to select the LUT to try it

Should look like this for you then:

CM Axis:
View attachment 647109

CM Force Feedback:
View attachment 647114

CSP -> FFB Tweaks:
View attachment 647121

I sadly only know about 3 users here that use the G923 LUTs and one had issues with the LUT the other one liked most.

But here are the 3 LUTs again in one post.
You need to delete the ".txt" at the end. It's a zip files with the AC folder structure and the 3 files in the lowest layer.
Documents\Assetto Corsa\cfg\
-> LUTs into that folder

Then I hope you're using Content Manager?
Just start/restart Content Manager and you should be able to select the LUT to try it

Should look like this for you then:

CM Axis:
View attachment 647109

CM Force Feedback:
View attachment 647114

CSP -> FFB Tweaks:
View attachment 647121

I will try at weekend and hopefully give a feedback, thank you for your effort!

 

[Hininedan]

hi! thanks for your lut!
but what you mean with (75-125% In the CAR) ?

 

[RasmusP]

hi! thanks for your lut!
but what you mean with (75-125% In the CAR) ?

When you're driving on the track, you can press + or - on your numpad (right edge of the keyboard).
If you press one of the buttons, a text will appear at the top of your screen telling you the "per-car-gain".
These "per-car-gain" gets saved in this file:
\\Documents\Assetto Corsa\cfg -> user_ff.ini

Looks like this for me: (Fanatec wheel nowadays)

It's to fine tune every car to be perfectly smooth in the center. Each car has slightly different ffb due to the physics.
But the Logitech wheels are only smooth at a very specific strength around the center, so you need to fine tune every car to have identical strength around the center to feel smooth

 

[wingzero30]

I sadly only know about 3 users here that use the G923 LUTs and one had issues with the LUT the other one liked most.

But here are the 3 LUTs again in one post.
You need to delete the ".txt" at the end. It's a zip files with the AC folder structure and the 3 files in the lowest layer.
Documents\Assetto Corsa\cfg\
-> LUTs into that folder

Then I hope you're using Content Manager?
Just start/restart Content Manager and you should be able to select the LUT to try it

Should look like this for you then:

CM Axis:
View attachment 647109

CM Force Feedback:
View attachment 647114

CSP -> FFB Tweaks:
View attachment 647121

get my hands on my wheel yesterday, and I followed every parameter in your screenshot, and using beta2 LUT, there are two issues that I'm not sure if expected:

1. when the car is idle, the g923 wheel is shaking a littble bit, like an impulse, with a few seconds interval, which feels weird;
2. when braking, if I try a little bit harder, when the car gets a descent braking force, the wheel is getting lots of force feedback, which seems strange, as I don't expect a force when braking.

are they expected? besides, for beta 1 ,2 what's the difference? stronger means more force I think

 

[kheadley]

Hey I get a bit of slight oscillation with the g29 using your reccomended setup, what can i do to solve this?

 

[RasmusP]

Sorry for not replying yet!

1. when the car is idle, the g923 wheel is shaking a littble bit, like an impulse, with a few seconds interval, which feels weird;

This is "normal".
Are you using Beta 1 or Beta 2? Beta 2 should be a lot less aggressive around the center and when at idle!

You can get rid of this by changing the right value of the very first line in the LUT file to 0.0
It's basically "ffb noise" that smoothes out the center position while driving. Otherwise you would feel a little "click", when passing the center with no ffb at it.
The "ffb noise" fills the 0% ffb spot in the center.

I agree that it feels weird when not driving! I tuned it to be fine with the G27 with my other LUTs so it might be that it's a bit too high for the G923!

2. when braking, if I try a little bit harder, when the car gets a descent braking force, the wheel is getting lots of force feedback, which seems strange, as I don't expect a force when braking.

This is probably either the:
Slip effect
or
ABS effect

in the ffb settings. If the car has abs, lower the ABS effect. If it doesn't have ABS, lower the Slip effect.
The Slip effect is also vibrating when you have wheelspin or when sliding.

Both are fake effects to get feedback about your pedals, which don't have ffb.

are they expected? besides, for beta 1 ,2 what's the difference? stronger means more force I think

As I explained, yep, both expected.
Beta 1 is way stronger around the center than beta 2. So you might have a shaking wheel with beta 1.
Or getting rid of the "weird" ffb by using beta 2 instead of 1. Depending which on you're using right now

 

[RasmusP]

Hey I get a bit of slight oscillation with the g29 using your reccomended setup, what can i do to solve this?

Can you describe this a bit more accurate?
Oscillations when driving fast or when standing still?
Or all the time?

Are they happening when you're driving straight and taking your hands off or do you need to give it a bit of steering input and then let go?

Also: do you mean "vibrations" or real movements like 40° left/right that won't stop?

If it's the 40° left/right, then lowering the per-car-gain might help. But only if it's NOT with ALL cars.
Simply press the minus button on your numbers-pad of your keyboard.
You should see the per-car-gain % at the top of your screen then.

The optimum range is between 85-115% depending on the car!

 

[wingzero30]

Sorry for not replying yet!

This is "normal".
Are you using Beta 1 or Beta 2? Beta 2 should be a lot less aggressive around the center and when at idle!

You can get rid of this by changing the right value of the very first line in the LUT file to 0.0
It's basically "ffb noise" that smoothes out the center position while driving. Otherwise you would feel a little "click", when passing the center with no ffb at it.
The "ffb noise" fills the 0% ffb spot in the center.

I agree that it feels weird when not driving! I tuned it to be fine with the G27 with my other LUTs so it might be that it's a bit too high for the G923!


This is probably either the:
Slip effect
or
ABS effect

in the ffb settings. If the car has abs, lower the ABS effect. If it doesn't have ABS, lower the Slip effect.
The Slip effect is also vibrating when you have wheelspin or when sliding.

Both are fake effects to get feedback about your pedals, which don't have ffb.

As I explained, yep, both expected.
Beta 1 is way stronger around the center than beta 2. So you might have a shaking wheel with beta 1.
Or getting rid of the "weird" ffb by using beta 2 instead of 1. Depending which on you're using right now

It's fine, every one needs to raise the family
I tried beta2 first, and little time on beta 1, not finding too much difference. I didn't pay attention to the level of the impulse between beta 1 and 2, but thanks for explain.

beta2 seems also have the shake, but I will try again too. I think I'm all set to modify your LUT now.

 

[turekede]

i saw on reddit that g923 is different that g29/g920 and dont need really lut. I find that the best experience is withouth lut so maybe you should try this too

 

[RasmusP]

i saw on reddit that g923 is different that g29/g920 and dont need really lut. I find that the best experience is withouth lut so maybe you should try this too

Might make sense, yeah. It definitely has a different gain setup internally plus some software tweaks.

But it still uses 2 motors on 1 shaft like the G25/27/29/920 and it has the little "clunky" in the center.

So it doesn't need a LUT to boost the minimum ffb 15% upwards, but it still can feel better with a smooth curve from 0-5% ffb instead of a straight line.

Which LUTs did you try?
The LUT generator does some wild stuff to your ffb! Not comparable with my G923 beta LUTs, which only make 0-5% ffb a smooth curve instead of a "step".

So when talking about "using a LUT", it's very important to say which LUT. If your lut is a straight line from 0-100%, it doesn't do anything at all.
But you can also do wild stuff that feels absolutely awful with another lut.

 

[turekede]

Might make sense, yeah. It definitely has a different gain setup internally plus some software tweaks.

But it still uses 2 motors on 1 shaft like the G25/27/29/920 and it has the little "clunky" in the center.

So it doesn't need a LUT to boost the minimum ffb 15% upwards, but it still can feel better with a smooth curve from 0-5% ffb instead of a straight line.

Which LUTs did you try?
The LUT generator does some wild stuff to your ffb! Not comparable with my G923 beta LUTs, which only make 0-5% ffb a smooth curve instead of a "step".

So when talking about "using a LUT", it's very important to say which LUT. If your lut is a straight line from 0-100%, it doesn't do anything at all.
But you can also do wild stuff that feels absolutely awful with another lut.

Yes, I know that the LUT generator does some weird stuff. I found some values on the internet that can be pasted, but it was just a regular straight line curve. I tried each of the three LUTs you provided, but all of them had oscillations when releasing the steering wheel, even after manually changing the first values in the .LUT file.

However, I'm wondering about something. If I'm using the G923 for drifting, should I enable any settings like ABS, etc.? I read that in that case, the staggering amount of 2NM is distributed across more options instead of just reflecting the steering wheel, which is already inadequate in the G923.

So, I'm wondering if it might be better to disable all additional options and simply set the FFB gain to 120-150%?

 

[RasmusP]

I tried each of the three LUTs you provided, but all of them had oscillations when releasing the steering wheel, even after manually changing the first values in the .LUT file.

Try the one I attached to this post. I tried to squeeze in my "custom curve" to make the center transition smooth while making it as close to the default ffb as possible.

You need to delete the ".txt" at the end. Sadly we can't upload .lut here in RD threads.

The oscillations are from too high ffb levels between 0-30% ffb from the physics engine.
The beta lut 2 boosts 5% to 15%, 10% to 20% and 20% to 29%.

The first value in the luts is only causing some slight "vibrations" when standing still. No oscillations while driving.

However, I'm wondering about something. If I'm using the G923 for drifting, should I enable any settings like ABS, etc.? I read that in that case, the staggering amount of 2NM is distributed across more options instead of just reflecting the steering wheel, which is already inadequate in the G923.

ABS should be fine, since it only triggers when braking hard enough to actually reach the ABS trigger point.
Kerbs effect should basically be off anyway since it's only a generic vibration when touching a "Surface type = kerb".
Slip effect should be OFF for drifting, obviously. It's generic vibration when you get wheels slipping and drifting IS wheels slipping

Road effect is a vibration depending on the surface type. So it can be quite cool but I would keep it below 5% to be honest.

The theory behind this is correct though! But I'd argue that when the ABS is active, it doesn't matter if you feel a bit more or not.
It's not like the would take away steering torque though. It just gets added on top so you lose "details" when going beyond 100% (clipping).

Looks like this:

So, I'm wondering if it might be better to disable all additional options and simply set the FFB gain to 120-150%?

If you're using more than 100%, you will get an oscillating wheel and also a lot of clipping and therefore lose details.
However your wheel will spin a bit quicker, so it might work better for drifting.

But instead of using gain beyond 100%, I would use the "Steering Range Compression" from CSP FFB Tweaks at 300% and reduce the gain until the wheel stops oscillating like crazy.

This boosts lower ffb WITHOUT clipping the higher ffb massively.

 

[RasmusP]

@Kuvon123
Hey, I just saw your review and you apparently need some help. Here's the place for it

Are you using Content Manager and could you post Screenshots of your settings?

Just use winkey+ctrl+s to get the snipping tool activated -> hold left mouse to draw the rectangle for the screenshot -> ctrl + v in this posting window to paste the screenshot in this thread.

If you knew this, just ignore what I wrote

Do this for Content Manager Axis & Force Feedback and also for your Logitech software.
This is the fastest way for me to check what went wrong

Should look like this:

CSP (Custom Shaders Patch) -> FFB Tweaks: