SteamVR 2.2.3 Stuttering in DCS with

[strikkflypilot]

Extreme stuttering using the Varjo Aero in DCS with latest open beta 2.2.3.
Have gone from 90fps on title page on previous steamvr versions to 10fps with the new 2.2.3. Reverting to stable, 2.1.10 and the frames are up at 90 on the makn page again. Have tried 3 times going back and forth and it reproduces every time.

[aaron.leiby]

I just tested with Index and did not see any issue.

The only thing I can think of that might cause this that was added in 2.2.x is re-enabling of Advanced Supersample Filtering. You can try disabling this under VR Settings > Video (set Advanced Settings in the lower left to Show).

Also, if you go to C:\Program Files (x86)\Steam\logs you should find a vrclient_DCS.txt file.

The start of each run is demarcated with:

Thu Dec 21 2023 10:28:06.284 [Info] - //==============================================================================================
Thu Dec 21 2023 10:28:06.285 [Info] - ================================================================================================
Thu Dec 21 2023 10:28:06.285 [Info] - ================================================================================================
Thu Dec 21 2023 10:28:06.285 [Info] - DCS.exe 2.2.3 startup with PID=40480, config=C:\Program Files (x86)\Steam\config, runtime=C:\Program Files (x86)\Steam\steamapps\common\SteamVR

The 2.2.3 is the SteamVR runtime version so you can compare any differences.

Further down you will see output like the following:

Thu Dec 21 2023 10:28:16.165 [Info] - Capturing Scene Focus
Thu Dec 21 2023 10:28:16.205 [Info] - Found Windows 10 or newer, so enable advanced image processing of scene textures.
Thu Dec 21 2023 10:28:16.228 [Info] - Setting max texture dimensions to 3227x3586 before requiring downsampling (standard)
Thu Dec 21 2023 10:28:16.231 [Info] - Created shared texture 'Scene create D3D11, 0' 2468x2740 (1 mips)

I'd be interested in what these say for your setup between 2.2.3 and 2.1.10.

[Liquidblack6]

Same Varjo issue and I posted the below. As I was trying to figure out the issue, it seems as soon as I move the headset the FPS drops from 90 to 9-10. When I start SteamVR and DCS (not touching the headset) it will stay at 90 FPS. When I pick it up, it immediately drops to 9-10 FPS, Steam VR goes into stand-by mode and wants me to put the headset on, but it is working (with 9-10 FPS).

Steam VR 2.2.3- Stutter-DCS-Unplayable with Update
I had enabled SteamVR Beta until it updated a couple of days ago. When the Beta update dropped-DCS became uplayable due to stuttering. Prior to the Beta update a couple of days ago no stutters or issues. I disabled SteamVR Beta and it returned to no stutters or issues. When Steam VR 2.2 dropped a couple of hours ago it is now unplayable, due to stutters the same as when the Beta update dropped.


90 FPS prior to 2.2.3 update
9-10 FPS after 2.2.3 update

Disabled Advanced Super Sampling-No Effect

Before I touch my headset I start Steam VR and DCS. It is at 90 FPS. After picking up my headset or slightly move the headset, the FPS immediately drops to 9-10 and STEAM VR goes into stand-by mode and asks my to put on the headset. but the headset still has screen views. As long as the headset isn't moving the FPS is 90. Once it slightly moves the FPS drops to 9-10 and SteamVR goes in to stand-by mode. FPS remains 9-10 while SteamVR is in Stand-by mode, the headset is moving, but showing the screen.

Windows 11
Varjo Aero
RTX4090
i9-13900k
DDR5 6800 96GB

[Fujisawa]

Same issue here with Varjo Aero. I never participated in Steam VR beta, but today the main branch got updated to 2.2. Now it's unplayable. This also happens with ETS2 and ATS.

The SteamVR environment itself is no problem at all, but in-game it is just horribly broken.

[strikkflypilot]

Oh No! 2.2.3 went release. DCS with fluid motion running the MT preview with openXR is ruined(10fps vs 90fps previously. Now you have to run with the SteamVR runtime which is a stutterfest!

Varjo Aero, 7950x3d, 4090.

[strikkflypilot]

Others on the Varjo discord(under DCS) have noticed the same. Only thing that works now, AND PLEASE DONT REMOVE IT!, is reverting to steamVR temp beta 1.27.5. The it works as before again.

[Target]

Could you please make it possible to revert to the previous version until this can get sorted out? Thanks!

[harlikwin667]

Same exact problem with DCS. I was on steamVR stable. Running the Varjo OpenXR. 90fps no issues. SteamVR updated, and now my options are:

Varjo OpenXR locked to 10fps

Switching to Steam OpenXR game loads robot the load screen but then crashes when trying to play.

Therefore cant play DCS.

Incidentally MSFS was the same 10fps issue, but switching to Steam openXR fixed it.

[Sile]

Many reports with this problem (DCS Forum and Varjo Discord), since the steamVR stable update on 21st of december.
Before it helped to opt out of beta, this isn't possible now.

What's strange is everyone with the problem seems to have DCS in Steam.
Standalone Users seem to be unaffected. Friend switched form SteamDCS to Standalone and the issue was gone.

[Sile]

New info:
Disabling OpenVR in Varjo Base seems to help mitigate the issue as well.

[strikkflypilot]

#aaron.leiby I am sorry, I should haveposted the logfile… any point now that the 2.2.3 is release version? Also setting the Advanced Supersampling Filtering made no difference

[aaron.leiby]

I don't have access to a Varjo Aero presently to test with, but if someone wants to capture and post a gpuview trace while the issue is happening, I can take a look at that and see if that provides any clues.

https://developer.valvesoftware.com/wiki/SteamVR/Installing_GPUView

After picking up my headset or slightly move the headset, (...) STEAM VR goes into stand-by mode and asks my to put on the headset.

That sounds broken. Did the Varjo Aero always behave this way, or is this new?
If you set "Pause VR when headset is idle" to Off, does this make any difference?
(Under VR Settings > Video w/ Advanced Settings = Show)

[Liquidblack6]

It only began on 12/19 after the 2.2.3 Beta release. When I disabled Beta and went to stable it was fine. On 12/21 when 2.2.3 was released as stable, it started again. I reverted to 1.27.5 (Thanks Strikkflypilot!) and is working fine. Seems like the issue is 2.2.3

[Fujisawa]

Originally posted by Sile:

New info:
Disabling OpenVR in Varjo Base seems to help mitigate the issue as well.

I can confirm this works. SteamVR does throw an error when launching, but everything works fine after clicking the message away.

It seems with 2.2.3, SteamVR gets loaded everytime I put on the Aero, even when not running a game or something in OpenVR. This somehow causes the performance problems when running an OpenXR game it seems.

[Sile]

Originally posted by Fujisawa:

Originally posted by Sile:

New info:
Disabling OpenVR in Varjo Base seems to help mitigate the issue as well.

I can confirm this works. SteamVR does throw an error when launching, but everything works fine after clicking the message away.

It seems with 2.2.3, SteamVR gets loaded everytime I put on the Aero, even when not running a game or something in OpenVR. This somehow causes the performance problems when running an OpenXR game it seems.

hi, what do you mean by "SteamVR gets loaded?"

Do you see the little steamVR window now with the new steamvr?
(because the vrserver.exe server got loaded before in background for tracking and was only visible in task manager)

[Fujisawa]

No, it's not the widget that gets loaded, but there's this icon in the right-upper main window of Steam that turns green and also, in my Friends list, I see 'VR' in my status, even if I'm just looking at the desktop through the headset (not near my rig now, so cannot take a screenshot).

This wasn't the case before. Actually, before when I was in an OpenXR game, Steam wouldn't show anything about me being in VR. I know before some parts of SteamVR gets loaded because of the lighthouse tracking, but something has changed for sure with 2.2.3.