Hunting for the stutter-free VR experience.

[Panzerlang]

23 minutes ago, Marshallman said:

Having just spent £1K on a motherboard and deposit in for a Pimax super, I am seriously frustrated at the one step forward two back VR problems.

Last night on iraq I had CPU on overdrive....then GPU on overdrive (specs below).....

I started to think when was the last time i was happy with VR and it was openXR toolkit. I downloaded it again and now everything is running fine with CPU and GPU at 24 and 45%

Zero bottlenecking and sharp as......just my 2p worth

Was open XR DCS broken?

Well, you are using a 4090 to drive a G2.

[Special K]

Am 11.12.2024 um 15:41 schrieb The_Nephilim:

to be honest I am afraid to try it.. does it work well with the link cable?

why not use Process Lasso, why would I use the ecores for DCS?? any benchmarks with and without PL?

Because DCS MT knows which cores are P and which are E. Look at the startup and you see that DCS detects the performance class of each of your logical cores and it then decides which ones to use for what.

Unless you are on Windows 10 (which doesn't make much sense with these CPUs, but I see that every day), you can use them with DCS.

[Roosterfeet]

6 minutes ago, Special K said:

Because DCS MT knows which cores are P and which are E. Look at the startup and you see that DCS detects the performance class of each of your logical cores and it then decides which ones to use for what.

Unless you are on Windows 10 (which doesn't make much sense with these CPUs, but I see that every day), you can use them with DCS.

So I'm still running Windows 10 on a 5800x3D with, a 4070 and 32 gb RAM driving a Quest 3. Do you think I would see a performance benefit if I moved to Windows 11?

[Qcumber]

3 hours ago, Marshallman said:

Having just spent £1K on a motherboard and deposit in for a Pimax super, I am seriously frustrated at the one step forward two back VR problems.

Last night on iraq I had CPU on overdrive....then GPU on overdrive (specs below).....

I started to think when was the last time i was happy with VR and it was openXR toolkit. I downloaded it again and now everything is running fine with CPU and GPU at 24 and 45%

Zero bottlenecking and sharp as......just my 2p worth

Was open XR DCS broken?

OXRTK just let's you control a few options whilst DCS us running on open XR. I suspect that you have some settings which reduce the resolution or otherwise reduce the CPU/GPU load. Can you post a screenshot of your OXRTK settings? 

[Marshallman]

2 hours ago, Qcumber said:

OXRTK just let's you control a few options whilst DCS us running on open XR. I suspect that you have some settings which reduce the resolution or otherwise reduce the CPU/GPU load. Can you post a screenshot of your OXRTK settings? 

THanks...not quite sure what Im doing however!!

OXRTK  Cannot get a pic through goggles

Page 1 is all ive touched

F16 Afghanistan

Advanced

60

CAS

100%

Off

On

Off

No

GPU headroom on Afghanistan Map 53%

Vram 8.2G

rdr cpu 1.6 secs

app gpu 7.7ms

 

Moving to Iraq over Bahgdad city F16 .......Some areas are really killing the GPU and CPUwith Frame drops to 54 and bottlenecking on CPU and GPU.

Heavy drops also around the City area in the Kiowa.

 

Regards

 

 

 

[Qcumber]

17 minutes ago, Marshallman said:

THanks...not quite sure what Im doing however!!

OXRTK  Cannot get a pic through goggles

Page 1 is all ive touched

F16 Afghanistan

Advanced

60

CAS

100%

Off

On

Off

No

GPU headroom on Afghanistan Map 53%

Vram 8.2G

rdr cpu 1.6 secs

app gpu 7.7ms

 

Moving to Iraq over Bahgdad city F16 .......Some areas are really killing the GPU and CPUwith Frame drops to 54 and bottlenecking on CPU and GPU.

Heavy drops also around the City area in the Kiowa.

 

Regards

 

 

 

Have you overridden the resolution in the third tab? It might be running at a lower Res than without OXRTK.  

[Marshallman]

5 minutes ago, Qcumber said:

Have you overridden the resolution in the third tab? It might be running at a lower Res than without OXRTK.  

Yes it was on 68fps now I think about it I upped it to 100%... if thats the number you mean

 

The numbers seem vaguely familiar from the old days whether these settings were still "in the system" so to speak!

 

Edited December 12, 2024 by Marshallman
thoughts

[Qcumber]

21 minutes ago, Marshallman said:

Yes it was on 68fps now I think about it I upped it to 100%... if thats the number you mean

 

The numbers seem vaguely familiar from the old days whether these settings were still "in the system" so to speak!

 

Look at the system tab and see if resolution is overridden. 

 

[Marshallman]

56 minutes ago, Qcumber said:

Look at the system tab and see if resolution is overridden. 

 

No, simple, default, none! 

Do you recommend the above?

OK update tried your settings above on mine and it loaded the graphics card from 44% to 63%

 

Edited December 12, 2024 by Marshallman

[Qcumber]

29 minutes ago, Marshallman said:

No, simple, default, none! 

Do you recommend the above?

OK update tried your settings above on mine and it loaded the graphics card from 44% to 63%

 

No. Leave the override off. Just wondered if OXRTK was reducing your resolution and that was why you were getting better performance. Are you using foveated rendering in OXRTK? 

[Marshallman]

19 minutes ago, Qcumber said:

No. Leave the override off. Just wondered if OXRTK was reducing your resolution and that was why you were getting better performance. Are you using foveated rendering in OXRTK? 

No.... I've left that for the time being and thankyou for your help!!

[DucS2r]

I just did a major upgrade to my CPU and GPU (in sig) and was generally happy after a month or so of tuning. But flying a mission last night over the mountains between Iraq and Iran on the new map, I had the stutter issue every couple of minutes, CPU times going from 4ms to 40 and fps going from 90 to 12. Then it would go back to normal and repeat the stutter. I followed the advice in this thread and did the same route tonight with no stutters and fps usually at 90 and no lower than 85 or so. I did a few MS 11 changes, but I think it was the shift from TAA to DLSS quality and lowering the visibility from Ultra to High that did it. 

Edited December 14, 2024 by DucS2r

[Panzerlang]

2 hours ago, DucS2r said:

I just did a major upgrade to my CPU and GPU (in sig) and was generally happy after a month or so of tuning. But flying a mission last night over the mountains between Iraq and Iran on the new map, I had the stutter issue every couple of minutes, CPU times going from 4ms to 40 and fps going from 90 to 12. Then it would go back to normal and repeat the stutter. I followed the advice in this thread and did the same route tonight with no stutters and fps usually at 90 and no lower than 85 or so. I did a few MS 11 changes, but I think it was the shift from TAA to DLSS quality and lowering the visibility from Ultra to High that did it. 

If you have the Mig21, can you do the cold start on the Caucasus map and just watch the two other 21s taxi past your nose? In VR if you're on that. I'm very interested to know if they'll stutter/jerk for you too. 

I'm also in the middle of an OS re-install. It's up and running but I have to wait until monday for the two 2TB SSDs to arrive. I bought all the maps and they wouldn't fit on the 1TB drive.

I'm hoping fresh everything will give some DCS improvements.

Edited December 14, 2024 by Panzerlang

[Marshallman]

3 hours ago, Panzerlang said:

If you have the Mig21, can you do the cold start on the Caucasus map and just watch the two other 21s taxi past your nose? In VR if you're on that. I'm very interested to know if they'll stutter/jerk for you too. 

I'm also in the middle of an OS re-install. It's up and running but I have to wait until monday for the two 2TB SSDs to arrive. I bought all the maps and they wouldn't fit on the 1TB drive.

I'm hoping fresh everything will give some DCS improvements.

I found a lot of issues in Baghdad with Frame drops and so did the Grim Reapers (video)

  22 mins in.

Reggrds

[Dogmanbird]

turning turbo mode on gets rid of my big stutters 

[DucS2r]

11 hours ago, Panzerlang said:

If you have the Mig21, can you do the cold start on the Caucasus map and just watch the two other 21s taxi past your nose? In VR if you're on that. I'm very interested to know if they'll stutter/jerk for you too. 

I'm also in the middle of an OS re-install. It's up and running but I have to wait until monday for the two 2TB SSDs to arrive. I bought all the maps and they wouldn't fit on the 1TB drive.

I'm hoping fresh everything will give some DCS improvements.

I did the cold start and waited for the two MiGs to taxi past. FPS stayed solid 90 and CPU went from 5.8ms to 6.9ms, no change in GPU frame time. Good luck with the reinstall. I run with Turbo off, though I have tried it both ways with no perceptible change. And yes, I only fly in VR.

I encountered the severe stuttering on the Iraq map on a long flight from Kirkuk to Mosul, then east over the Iraq/Iran border mountains, then back to Kirkuk. The worst stuttering was over the mountains. I did the same flight last night after the changes (above) and no stuttering at all. 

Finally, I run a 4k monitor as primary and a 1440 as second monitor. After the last firmware update (PCL headset), I could not get Pimax Play to recognize my headset. I also encountered the mouse bug for the first time. After some advice from Pimax and a lot of experimenting I solved it by making the 1440 primary monitor and leaving the 4k off when I boot up. Something about a conflict with a high resolution display and Pimax. No problems since (fingers crossed). 

 

[Panzerlang]

Thanks Duc.

I currently have one SSD installed and my CPU is now idling (or running Edge) at 19c. Before the Big Wipe it was never below 32c, so it would appear something on the wiped OS was constantly running the CPU. Interesting. 

[DucS2r]

24 minutes ago, Panzerlang said:

Thanks Duc.

I currently have one SSD installed and my CPU is now idling (or running Edge) at 19c. Before the Big Wipe it was never below 32c, so it would appear something on the wiped OS was constantly running the CPU. Interesting. 

I was hitting 80 FPS consistently but backed off a few settings (shadows to low, grass, traffic and smoke off, water medium and visibility to high and nothing on below water) That allowed me to hit 90 most of the time, and always at altitude. OXRTK CAS sharpening 100% and nothing else; Pimax OpenXR with Quadviews unchecked, Quadviews FFR and Companion tweaked a little and Turbo off. Good luck, we have very similar systems

[av8orDave]

What is your pixel density? I have mine set to 1.5. Also, try turning textures to medium, terrain textures to low, and visibility to medium. After that, cross your fingers, sprinkle some holy water directly on your CPU, build a shrine to the glorious MiG-29, pray for smooth VR framerates while kneeling in front of it, and if necessary sacrifice a small goat to Robin Olds. If this doesn't do the trick, you'll have to make a pilgrimage to the National Museum of the US Air Force at Wright-Patterson AFB in Ohio to say the framerate prayer in front of the P-47, P-51, F-86, F-4E, F-5, A-10, F-16, F-15, and F-15E (in that order). If done properly and all steps are followed, you may get 72 fps with decent settings so long as no more than 8 AI units are active on a map of your choice. If this doesn't work, you'll need to reach out to Sandia National Laboratories to see about using one of their supercomputers for your gaming sessions. Good luck and godspeed.

[Special K]

Am 12.12.2024 um 16:06 schrieb Roosterfeet:

So I'm still running Windows 10 on a 5800x3D with, a 4070 and 32 gb RAM driving a Quest 3. Do you think I would see a performance benefit if I moved to Windows 11?

Sorry haven't seen it earlier.

There were some significant performances improvements by AMD that they only applied to Windows 11, so I would assume that yes. It's a completely different story than with the E-core CPUs though.

[Moxica]

In my last effort towards stutter-free, I changed overall sound setting from 24 bit, 96000Hz to 16Bit, 48000Hz.
-Helped a little bit, I think.
Also went back from 72 Hz/72FPS to 90/90. No difference. Just a better/clearer picture.
Micro stutter remain in both menus and cockpit, and is unaffected by any setting.

[Panzerlang]

1 hour ago, Moxica said:

In my last effort towards stutter-free, I changed overall sound setting from 24 bit, 96000Hz to 16Bit, 48000Hz.
-Helped a little bit, I think.
Also went back from 72 Hz/72FPS to 90/90. No difference. Just a better/clearer picture.
Micro stutter remain in both menus and cockpit, and is unaffected by any setting.

I'm going to guess it's your CPU that's causing it. All my FPS-window messages are "CPU Bound" and that's with a 13900k running at 5.5ghz (with a 4090). DCS munches CPUs.

[Moxica]

23 minutes ago, Panzerlang said:

I'm going to guess it's your CPU that's causing it. All my FPS-window messages are "CPU Bound" and that's with a 13900k running at 5.5ghz (with a 4090). DCS munches CPUs.

Rather: Some process is doing it to the CPU..

[Panzerlang]

38 minutes ago, Moxica said:

Rather: Some process is doing it to the CPU..

As they do with all games, it's just that DCS is exceptionally demanding. I've just reinstalled my W11 and with both 23H2 and 24H2 it's running pretty decently but not at all perfect.

[Moxica]

1 hour ago, Panzerlang said:

As they do with all games, it's just that DCS is exceptionally demanding. I've just reinstalled my W11 and with both 23H2 and 24H2 it's running pretty decently but not at all perfect.

I have no other games stuttering my cpu, nor the 4090. Not even close. So no, they do not do that with all games.