Micro Stutters Rift S

[Ramires]

Hey Gents,

I'm struggling with VR in DCS, especially on the Syria Map. The funny thing is that I've noted the problems after a few sessions after an DCS update. So it might run smooth for two or three times and then it start with micro stuttering. I tested pretty much every possible setting (íncluding nVidia settings)  , but nothing really helped. The RAM is at an constantly high level of about 28-30GB on the Syria map. Reducing the garphic settings in DCS shows pretty much no effect.

I have an Oculus Rift S, 32 GB RAM, RTX 3080

 

Thanks

[xien]

did you tried checking your graphics or oculus drivers, if they are fully up to date. Update graphics card

Edited May 10, 2022 by xien

[Ramires]

Yes. Systems run the latest drivers.

[firefox121]

hace 2 horas, Ramires dijo:

Hey Gents,

I'm struggling with VR in DCS, especially on the Syria Map. The funny thing is that I've noted the problems after a few sessions after an DCS update. So it might run smooth for two or three times and then it start with micro stuttering. I tested pretty much every possible setting (íncluding nVidia settings)  , but nothing really helped. The RAM is at an constantly high level of about 28-30GB on the Syria map. Reducing the garphic settings in DCS shows pretty much no effect.

I have an Oculus Rift S, 32 GB RAM, RTX 3080

 

Thanks

Hi, check if fos some reason you checked or activated the vsync option in DCS and/or in Nvidia control panel,

In other ways, witch what module the micro suttering appears, in my case, starts with the apache, the solution in my rig is going to DCS settings and set the graphics options to middle, not the terrain graphics. In the Apache module has (IMO) no difference in visuals on the cockpit, but the performance goes much better.

In the other hand, see if you are changing the ASW mode in the oculus headset (if I remember was done with "ctrl" or "alt" + "1 to 5" keypad press) maybe this should change your performance...

[jnr4817]

I was getting micro stutters too in my rift s. To help. I’m running lower gfx settings and am using the 2k cockpit texture mod for Apache. I also don’t use ASW, can’t stand the way it looks. Only thing I use OTT for is changing  pd to 1.5. 

[BIGNEWY]

Just checking, there is a known issue with wingwin scripts creating cpu spikes, disabling it if you a wingwin throttle may help. If you dont it maybe worth checking your scripts folder in saved games dcs folder anyway.

[Ramires]

Thanks guys for your quick replies, unfortunately nothing improved or solved the problem. 

I have a TM Warthog. Actually it feels like CPU spikes. Is there also a known issue with TM Warthog?

[firefox121]

hace 5 horas, jnr4817 dijo:

I was getting micro stutters too in my rift s. To help. I’m running lower gfx settings and am using the 2k cockpit texture mod for Apache. I also don’t use ASW, can’t stand the way it looks. Only thing I use OTT for is changing  pd to 1.5. 

hi, where can I found the 2k copkit texture mod for the Apache?

[freehand]

50 minutes ago, firefox121 said:

hi, where can I found the 2k copkit texture mod for the Apache?

https://www.digitalcombatsimulator.com/de/files/3321192/

[firefox121]

hace 15 minutos, freehand dijo:

https://www.digitalcombatsimulator.com/de/files/3321192/

Thnks, missed it because is in the skin directory not in the mod one. Gonna try

[ddc196]

Do you have hot plug enabled? If so you might want to try disabling it. If I remember correctly, this caused some people to have stutter issues. It's in settings under controls, bottom left side of screen.

[Ramires]

17 hours ago, ddc196 said:

Do you have hot plug enabled? If so you might want to try disabling it. If I remember correctly, this caused some people to have stutter issues. It's in settings under controls, bottom left side of screen.

Sorry I didn't get it. Where and what do you mean?

[Lange_666]

In DCS, go controls then disable hot plugging

[ddc196]

What Lange said, at the top of the home screen click the gear icon (settings), go to controls tab, at the bottom right of that window you'll see hot plug. Disable that.

Edited May 12, 2022 by ddc196

[Ramires]

16 hours ago, ddc196 said:

What Lange said, at the top of the home screen click the gear icon (settings), go to controls tab, at the bottom right of that window you'll see hot plug. Disable that.

 

Thanks guys, haven't noticed an improvement so far. But continue to check out tomorrow.

[RvL]

Turn off HAGS?

[Ramires]

Yes HAGS has been turned off. 
I switched on the "Force Mipmap Gen. On All Layers" option in the Oculus debug tool. Did not solve the issue but it feels like a small improvement concerning the stutters.

[DeltaMike]

Microstutter -- if that's what you are experiencing --  is caused by frame rate / refresh rate mismatch.  Easy way to test this is to turn motion reprojection on.  Is Oculus -- ahem "meta" -- still calling that "ASW"?  If so, turn it on and see if that solves your problem

If it does, you have options:

• Keep motion reprojection on (I know not everybody likes to do that, because of the artifact)
• Turn your settings down so you can consistently hold 80fps
• Turn your settings up so your framerates are consistently between 40 and 60fps.  

If you're running at 40fps, each frame will be displayed twice.  You'll suffer from slow framerates -- watch the horizon and do a barrel roll, and you'll see what I mean -- but there will be no microstutter.  At 80fps, each frame is displayed once; likewise, no microstutter (but with the benefit of a higher framerate). 

As you increase framerates from 40, most frames will be displayed twice, and occasionally you'll get an early frame.  As you decrease framerates from 80, most frames will be displayed once, with an occasional dropped frame.

I think the dropped frames are way more annoying than early frames, hence the recommendation to run in the lower end of that 40-80fps range. 

Back when I had a Rift S, I shot for a GPU time of 20ms, and that seemed to work OK for me.  I had the opposite problem: I was trying to flog a Vega56 fast enough to keep up.  If your 3080 can't consistently hold 80fps, you may need to slow that beast down a little bit.  

Note, the easiest way to to that is to crank up supersampling.  There are other ways of doing it.  Pixel density can help but it's tricky to manage, as performance varies (inversely) with the square of PD, so take it easy.   You could crank up clouds and shadows, but note that'll affect your CPU times as much as your GPU times.  You could try turning on MSAA, and probably have plenty of horsepower to do that.  But,  I feel supersampling is the easiest to get just right, and it makes the Rift S look fantastic

ETA: one way or another, we need some numbers.  CPU and GPU render times are way more helpful than the FPS counter

Edited May 16, 2022 by DeltaMike