Vertical sync = fast -> much less stutter in VR

[Darcaem]

Just wanted to share this in case it works for anyone else. nullSetting Vsync to "Fast" in NVidia control panel has improved significantly my gameplay in VR. The FPS remain the same, but I do have way less stutter.

I still have some stutter in the mission I used to play before 2.9.6 (a sandbox mission in Syria with custom scripting and many statics and units) that used to work smothly but was now unplayable... Other sandbox missions I made in Kola and Afghanistan are now stutter-free (fingers-crossed), so at least I have some hope now

Edit: unrelated, but reducing resolution in the first DCS setting does seem to improve 5-10 fps. I know, it has no sense, since I play in VR with "Use DCS system resolution" option checked... but I do swear it has improve in my system

Edited August 16, 2024 by Darcaem

[speed-of-heat]

resolution has no measurable difference in performance 

in the context of VR 

[Canada_Moose]

vsync is handled in the vr headset. It should be set to off inn the driver

[Glide]

Is this a Virtual Desktop solution?  What's your hardware?

[SharpeXB]

I don’t know how relevant Vsync is to VR but I always found Fast Vsync to work very well in DCS when using a monitor. 

[Darcaem]

55 minutes ago, speed-of-heat said:

resolution has no measurable difference in performance 

in the context of VR 

Exactly. But in my tests it does give me 5-10fps (and the mirror imagen appears in a small screen instead of a 100% height column window)

41 minutes ago, Glide said:

Is this a Virtual Desktop solution?  What's your hardware?

No, I'm using G2 with i9700, 64GB ram @3200, rtx3070

 

53 minutes ago, Canada_Moose said:

vsync is handled in the vr headset. It should be set to off inn the driver

Exactly again (according to what I've always read and common knowledge), vsync should be off in VR...  my bet is that this is somehow managing the frame queue, stabilizing the number of frames actually been worked on. I have no idea why it does improve for me, but it does. I'm just sharing the result of my tests is case anyone else wants to try

[FupDuck]

I have also found this to be true. Setting vsync to fast in the Nvidia settings improves stability in VR. Like OP, I know it makes no sense, but it works for me too.

[gonvise]

And inside DCS vsync on or off?

[FupDuck]

7 hours ago, gonvise said:

And inside DCS vsync on or off?

I have it off on. Again, I know it makes no sense that this combination works or does anything at all. Still...

Edit: corrected for reality, I thought it was off!

Edited August 18, 2024 by FupDuck

[diego999]

Interesting, I will run some tests. Thanks.

[LOW_Hitman]

Am 18.8.2024 um 21:49 schrieb FupDuck:

I have it off on. Again, I know it makes no sense that this combination works or does anything at all. Still...

Edit: corrected for reality, I thought it was off!

 

so on ingame and on within nvidia - correct?

[Darcaem]

I have it on (fast) within Nvidia and off ingame (in VR. When I edit missions on pancake I have it on, but then I have 0 stutters and perfect performance). Also, "Full screen" enabled seems to give me a little bit less stutter.

But I do think this is totally system dependent, and what works for someone does not for anyone else So we can only test everything

Edited August 20, 2024 by Darcaem

[dutchili]

If your are using a quest 3, update the software off your haven't. The latest release works wonders in reduction of ground stutteres. The spacewarp has improved. 72 fps is now perceived as fluent in most scenarios.

[LOW_Hitman]

Tested, no difference if set to on, fast or off. Are you using Turbo Mode in OpenXRToolkit too?

Edited August 23, 2024 by LOW_Hitman

[Darcaem]

I disabled OpenXRToolkit since it gave me worse performance

[LOW_Hitman]

vor 21 Stunden schrieb Darcaem:

I disabled OpenXRToolkit since it gave me worse performance

Every single system is so different. I've tried OpenXRTK off and got worse performance, enabling turbo mode gave me +15to +20fps better fps on my system.

Edited August 24, 2024 by LOW_Hitman

[FupDuck]

On 8/20/2024 at 1:36 PM, LOW_Hitman said:

so on ingame and on within nvidia - correct?

Sorry for the late reply, but that's correct.