Stuttering issues

Jan Mikuž · Mar 26, 2015

I just installed the latest drivers for my gpu(R7 250X a.k.a. 7770) and did a quick test of the game.
The game ran smooth as butter for 10 minutes, then all of a sudden it began to stutter randomly ?
What can cause/trigger this ?

This was a test day V12@Montreal. Ultra preset, 4x AF, VSync on with stable 60fps (even when stutters occur), supersampling and 4xAA in Catalyst.

Thanks

Msportdan · Apr 2, 2015

i still have my replys, the above just lowers the frequency of them being recorded, it may or may not help. the record to disk i thik was the stutter killer.

Jan Mikuž · Apr 2, 2015

Msportdan said:
record hotlaps off, record 0 replays per track

But i understand this as no replays recorded. Am i right ?

Msportdan · Apr 2, 2015

no, it records the last 10 seconds. so you can still replay in game, it just wont save any of them.

Msportdan · Apr 2, 2015

these are me exadt settings feel free to paste them in.

Record Replays="1" // whether to record replays or not
Save All Replay Sessions="0" // whether to save the replay from each session
Record To Memory="1" // record replays to memory rather than disk (may possibly reduce stuttering, but at your own risk because memory usage will be significant for long races)
Compress Replay="1" // whether to compress VCR file (uses less disk space but takes more time to write)
Replay Wraparound="0" // whether replays wraparound in the fridge
Auto Monitor Replay="0" // whether to automatically start a replay when returning to monitor
Record Hotlaps="0" // whether to record hotlaps or not (must have replay recording on)
Instant Replay Length="10"
Replay Fidelity="1"
Super Player Replay="1" // record player at higher frequency
Number Track Replays="0" // how many replays to store for each track (using default naming convention only!)

Jan Mikuž · Apr 3, 2015

I was just watching a multiplayer replay and the fps hovers around 15-20 (ultra, 8xAF, 4xAA) and in resource monitor i see CPU0: 80+, CPU1: 20-35.

Is this normal ? Shouldn't the game suck all the juice it can get from all available CPU cores ?

hex · Apr 4, 2015

@Jan, are you using WindowsXP?

Jan Mikuž · Apr 4, 2015

No, i'm on Win 7/64-bit, 4gb ram.

hex · Apr 4, 2015

Jan Mikuž said:
Is this normal ? Shouldn't the game suck all the juice it can get from all available CPU cores ?

You might want to try +fullproc command, mate.

Jan Mikuž · Apr 4, 2015

I don't know what that is or where to activate it. In the .plr somewhere ?

hex · Apr 4, 2015

You just add it at the end of the line in your shortcut:

OR if you're using Steam version:

Properties -> General -> Set Launch Options -> simply add it

Jan Mikuž · Apr 4, 2015

Thank you, hex, will try it out.

hummer444 · Apr 4, 2015

Hi Jan,
Maybe this can help a bit, although you don't have an NVidia based graphic card:

http://www.racedepartment.com/threa...lly-no-image-quality-loss.97304/#post-1882250

Grtz
Rob

Jan Mikuž · Apr 4, 2015

Yeah, just noticed hex brought up the thread again. Will give those a look as well, thx.

Jan Mikuž · Apr 17, 2015

Still struggling with this.

Turned off vsync to see what kind of fps do i actually get and i get 95-140 on Ultra preset on the 3 tracks i've tried now :
Interlagos, Johannesburg, Goiania

It is almost unplayable with vsync off , though. I get screen tearing, stuttering and twitching all over the place.
Now if i turn vsync on the game becomes playable and smooth for the majority of the lap, but still random occasional twitching/stuttering appears. This is what i would like to eliminate completely, but i don't know what else to try.
Like i said, the stuttering is present even on basic graphics preset. But it shouldn't be, right ?

It should be completely smooth, shouldn't it ? CPU is unloaded and no other apps are taking up the power. Also, as vsync off shows, i get 95+ frames average on ultra preset, which should be enough to lock it at solid 60fps. Or am i missing something ?

Jan Mikuž · Apr 17, 2015

One more thing is that gpu usage drops to ca. 50% when vsync is on, while when it's off the gpu usage is constantly at 100%.

Bjarne Hansen · Apr 17, 2015

In your *.plr file find this line. It is in [graphic option]

Max Framerate="0" // 0 to disable, for regular exe only, see multiplayer.ini for dedicated server framerate, new: use negative values for alternate timing

Make sure to use a negative number. I use "-120" and Vsync off.
Some people report no lag with vsync on if you combine it with Max Framerate="-monitor frame rate" -60 for a monitor with 60hz frame rate.
Play around with a figure that works for you.