Stuttering when watching sideway in cockpit dilemma

[Thegino]

Im getting crazy , no matter how much I downgrade settings I keep having stuttering while looking sideways, not always but still too much frequently.. they last few second then I get 72fps again smooth.

Especially over airports and some cities in Caucasus map.

The system runs smoothly otherwise, nvidia app capped at 72fps, CPU 32% utilization, GPU 56% utilization. Even during stuttering I can’t see any gpu utilization increment.

 

I found different thread on that problem but still nothing conclusive . Any idea about why that happens ? Or setting may be responsible for that?

 

Attempts: tried lowering all settings , tried setting rbar option to on in nvidia app.

Problem: still stuttering randomly persist when watching sideways/back event with large headroom on both CPU and GPU.

[Flyingfish]

If you're using a quest headset try using open xr toolkit and setting turbo mode to on

[TAIPAN_]

Try Nvidia control panel:

* pre-rendered frames set to 3

* low latency mode: Ultra

 

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[sleighzy]

Attach your DCS log file. It's C:\Users\username\Saved Games\DCS\Logs\dcs.log (may just be a text document named "dcs" if your Windows is hiding file extensions). Make sure you replicate the issue prior to grabbing the log as it gets overwritten between sessions.

[Thegino]

Hello, thanks for suggestions and sorry for delay, too hot here these days to turn on that oven of a pc. So I currently have not a log handy and the latest one seems working nicely showing no more stutters.

 

Here are few updates, I tried with low latency ultra but have noticed weird effects, so I’m currently sticking with low latency on (not ultra), although no noticeable differences with low latency off. When low latency is on, pre-rendered frames is implicitly set to 1 according to Nvidia docs.

 

I also played with settings a lot and almost ended up giving up, until I tried to raise up fps from 72 to 80 both in virtual desktop and Nvidia app. DCS still at 300 fps. Not sure why, but everything looks like it finally synced. My frame timing moved from 10-13ms to 1-6ms , no more side lags/stutters/etc.

 

After that lucky discovery I sticked with 80fps and cranked up all the settings again:

• all the game settings not explicitly off are maxed out:
• Turned off: the usual options not performing well in vr  like motion blur, lens effect, depth of field. And, mostly for comptibility with reshade VR (to take advantage of dehazing effects): Volumetric light, global cockpit illumination, SSS, SSAO
• Other relevant settings: dlss balanced, pixel density 1.2 and about 0.8 FOV tangent on VD @ godlike settings. No fake frames/asw/etc..

 

Results are finally satisfying, in dense situations I can get as low as 69 fps, but still I can’t really notice any difference or downgrade in performance, everything stays smooth even at lower fps. Sideway lags is disappeared.

 

Tried the online log debugger and finally see no problems (see screenshot attached). Everything green and smooth.

Long story short, as weird as it sounds, my solution was to raise fps from 72 to 80.

Edited yesterday at 01:43 PM by Thegino