Good VR Performance, but only when "Window is out of focus!"

[Dave317]

I've turned off motion smoothing in steam wmr and so far everything looks good.  Thank you peachmonkey

[otavio]

I've had this issue since December 2020 (When I bought my RX6800). Has anyone found a fix?

[Dave317]

Literally my post above yours. 

Turn off motion smoothing in steam wmr.  Fixed it completly for me. 

[Topo]

2 hours ago, Dave317 said:

Literally my post above yours. 

Turn off motion smoothing in steam wmr.  Fixed it completly for me. 

I also solved it like that but it means we can't use motion smoothing? (RX 6900xt)

[wolkenjaeger]

I never had WMR installed (I think) and for some reason two processes thought they might help me with motion smoothing. So I installed WMR, tried the above mentioned fix and voila, I don't have this problem anymore. Very strange, but fixed for me finally.

 

Also: I've read you also could try to delete "steamvr.vrsettings" in "\Steam\config"... as there might be some dead config lines from your earlier headsets etc. too...

[otavio]

Even after disabling motion smoothing the problem persists. I guess it might have something to do with my windows installation. I'll try a fresh install soon.

[RealDCSpilot]

Just encountered this problem all of a sudden. Never had this kind of issue within 5 years VR. The solution on my side was a clean reinstall of SteamVR, following this procedure: https://steamcommunity.com/app/250820/discussions/2/1640917625015598552/

[Csgo GE oh yeah]

I'm having this same crap now. 

On a fresh windows install. 

[Csgo GE oh yeah]

For me it was "HAGS" ... (hardware accelerated gpu scheduling). 

DCS so old it can not deal with newer features. 

Turn it off. 

[Jackdesert]

Hey guys, just wanted to say the motion vector part fixed everything! Thank you so much for posting!

[ToT_XyaH]

Same problem...I had very poor performance under Windows 10, i5-9600k, 32GB DDR4-3200 CL18, RTX2080 with my VR HMD Pimax 5k+ using minimum quality level in DCS (set Min or VR profile) on a clear DCS instalation (without any mods), but with pixel density 1,5 for better panel reading (about 19-24 fps) and because of this reason, I haven't played DCS for a long time (about 6-7 months). Now I have improved my PC to i7-12700K, 32GB DDR4-4133 CL22, RTX 3080Ti and updated the system to Windows 11 (for Adler Lake features).

What I see now? Yes - I have good fps on the same minimum (!!!!) quality settings - or stable 45, or unfixed 65-70, but when I start flight and moving my head in VR, so image in VR HMD became is very shaky  (stutters - moves by breaks). On the monitor the duplicate image looks good. When I press Alt+Tab in HMD I see "Windows out of focus", I can't to control the sim, but image looks great - the image moves smoothly, one might say, perfectly, there are no artifacts, but you can’t play, because there is no control due to the focus on the desktop of the system. As soon as you press the key combination Alt+tab again to control the DCS application, the image becomes jerky and it is simply impossible to play.

I see a lot of topics on this forum about this problem, but some peaple found a different solutions by third party soft. It's too bad that the developers don't pay attention to the fact that the game has a number of bugs in VR and they still can't fix it.

I have not yet checked the options for disabling motion smoothing in SteamVR, but in software from Pimax I turned off all the improvements and it did not bring any result. I want to draw special attention to the fact that, in my opinion, the point here is not a software conflict from Steam or Pimax / WMR, but the problem of the bugs in DCS game, since when I run any other game under VR, I have no problems with the image under Windows 11 - everywhere the image is rendered without jerks/stutters.

Edited March 31, 2022 by ToT_XyaH

[laldren1983]

It's time to give up SteamVR, install OpenXr, and you'll see a 30% increase in frame rate and a faster boot time, so none of the above issues will be a problem

[M1Combat]

48 minutes ago, laldren1983 said:

It's time to give up SteamVR, install OpenXr, and you'll see a 30% increase in frame rate and a faster boot time, so none of the above issues will be a problem

That's not really true...  Though I suspect your smiley at the end was supposed to convey that.

Smoothness is much better with OXR but framerate is same or slightly less generally.  That said...  Even with a slightly lower framerate (generally about .5-1% lower) you will STILL have a better experience with OXR because of the way it is much smoother at a given framerate.

Edited August 9, 2022 by M1Combat

[average_pilot]

Flying low and slow in the Apache over Damascus looking at the side I get 24-27 fps. Since I need at least 30 fps for a "good" enough VR experience, at 24 fps it looks pretty choppy. Pretty fair, though, since there is a lot of detail cramped in there and my computer is not that great. But then I try alt-tab just in case and in less than 2 seconds my computer is rendering 30 fps steady. Alt-tab again and back to 24 fps. Alt-tab and 30 fps. 24, 30, 24, 30, 24, 30... every time. It turns out my computer can render Damascus at 30 fps but only when DCS doesn't have the focus. Frustrating AF.

Edited October 4, 2022 by average_pilot

[Temetre]

Well, Ive now found this issue as well. As soon as the game is "out of focus", everything is smooth, but íf not I get horrible stutter. Just constantly skipping frames, despite the actual shown average FPS hardly changing. 

Not sure if this is just limited to DCS tho...

[Trettifire]

Funny. I used to get sudden frame drops using Steam VR where it'd drop from 35-40 to anything between 2-20. In sheer anger, I'd open task manager and check out the performance page (or whatever it is called) to ID the bottleneck, but as soon as I had that open it'd go right back to 35-40. Switching back to DCS, it'd run smooth as long as I had that page open. 

Haven't had that problem after MT and switching to Openxr though.