Hunting for the stutter-free VR experience.

[Special K]

vor 2 Stunden schrieb Ready:

I am still on W10, reaply on the fence and have not yet been convinced to move to W11. I also read about possibility of degradations and new issues. 

Fair enough. It is the only OS where Microsoft puts their love in atm. There were issues, yes, with the first versions, but currently it is very stable. Vendors tend to apply only changes to Win11 these days, as you see with AMD. CPUs with E-cores are not even properly supported on Win10, which does not hit you in this case.

[Ready]

5 hours ago, Special K said:

Fair enough. It is the only OS where Microsoft puts their love in atm. There were issues, yes, with the first versions, but currently it is very stable. Vendors tend to apply only changes to Win11 these days, as you see with AMD. CPUs with E-cores are not even properly supported on Win10, which does not hit you in this case.

Yes I read about W10 having lower latency than W11 in some cases. My thing is that I am pretty happy with my W10 after heavy tweaking and very much dreading the uphill fight to get a new W11 under control. I most probably am going to set up a dual boot and just put W11 besides my current stable install, see how they compare and then possibly ditch W10, if I can get W11 performing the same or better.

Edited December 23, 2024 by Ready

[Panzerlang]

PowerSettingsExplorer app is here:

https://winraid.level1techs.com/t/windows-power-plan-settings-explorer-utility/32886

Change the highlighted value to 5 (from 15) and see if it reduces stutter in DCS I guess. I haven't tested yet and I'm not holding my breath.

 

Edited December 22, 2024 by Panzerlang

[jnr4817]

Let is know when you test.

 

Also here is my dxdiag and dcs.log

DxDiag.txt dcs.log

[Blackhawk163]

Okay I had an opportunity and a bit of bravery to tinker with my settings. I disabled Quadviews in Pimax xr and loaded up. Not only did the stutter return, but I lost 10fps as I had 72 before disabling and 62 when disabled. In my use case it’s quantifiable.The settings I had in FFR looked horrible btw without having QV activated. I restarted DCS with it (QV) back on, and then disabled FFR in opxrtk, it looked great but stutter city when looking out the sides. Turned FFR (it’s great that you can do this is real time btw) and after a few seconds, stutter gone. 
 

Is this the fix? No, idea, but this is what’s working for me. Despite the author of the app saying don’t run them in tandem, I am, and will continue to do so. Good luck to all in search of their fix. 

[jnr4817]

Here to screens. One about to go into the city of Baghdad and the other over the city. Over the city is a stutter mess.

[Blackhawk163]

So on waypoint three (?) of the f16 free flight mission over Baghdad, it’s a stutter mess. My fps drop from 72 (Pimax locked) to 53-55 and choppy. There simply too much being rendered for my 4080. If I look straight it’s smooth at 65-72. Once out of there and flying towards and past the airport everything goes back to normal and I’m back to 72 locked with no side window stutters. 

[Marshallman]

7 hours ago, Blackhawk163 said:

So on waypoint three (?) of the f16 free flight mission over Baghdad, it’s a stutter mess. My fps drop from 72 (Pimax locked) to 53-55 and choppy. There simply too much being rendered for my 4080. If I look straight it’s smooth at 65-72. Once out of there and flying towards and past the airport everything goes back to normal and I’m back to 72 locked with no side window stutters. 

Happens with me with 4090....and specs below..... there are areas on the map that need optimising.

Regards

[Special K]

Am 23.12.2024 um 00:54 schrieb Panzerlang:

PowerSettingsExplorer app is here:

https://winraid.level1techs.com/t/windows-power-plan-settings-explorer-utility/32886

Change the highlighted value to 5 (from 15) and see if it reduces stutter in DCS I guess. I haven't tested yet and I'm not holding my breath.

 

You better disable core parking than telling the CPU to check it more often in my eyes.

[Panzerlang]

1 hour ago, Special K said:

You better disable core parking than telling the CPU to check it more often in my eyes.

I already did that. It seems that DCS likes to flog one (or more) cores to 100% and that's why nobody can completely eradicate the stutter.

[Blackhawk163]

3 hours ago, Marshallman said:

Happens with me with 4090....and specs below..... there are areas on the map that need optimising.

Regards

Oh don’t I know it! My response was more to the person who used the Iraq map to highlight the stuttering. What I should’ve written is exactly with what you responded with. 
 

I’m stutter free for the most part. The only time I get any stuttering is when I become GPU bound and the fps drop causing my frame times to react simultaneously. So I’m good now. It was crazy to just cruise and peer over the sides and watch and see the landscape below me stutter the way it did. Hopefully everyone still getting theirs in relatively tame parts of their respective maps find a solution to their woes. 
 

Mine, however unconventional as it might be, required the simultaneous running of QV and FFR.* I can repeat this 100% of the time now. 

 

 

 

*also whatever graphical setting that I have selected in dcs/pimax/opxrtb

[Moxica]

1 hour ago, Blackhawk163 said:

Oh don’t I know it! My response was more to the person who used the Iraq map to highlight the stuttering. What I should’ve written is exactly with what you responded with. 
 

I’m stutter free for the most part. The only time I get any stuttering is when I become GPU bound and the fps drop causing my frame times to react simultaneously. So I’m good now. It was crazy to just cruise and peer over the sides and watch and see the landscape below me stutter the way it did. Hopefully everyone still getting theirs in relatively tame parts of their respective maps find a solution to their woes. 
 

Mine, however unconventional as it might be, required the simultaneous running of QV and FFR.* I can repeat this 100% of the time now. 

 

 

 

*also whatever graphical setting that I have selected in dcs/pimax/opxrtb

Does this setting apply when starting from DCS shortcut, or do one have to start from Pimax app?

[Blackhawk163]

1 minute ago, Moxica said:

Does this setting apply when starting from DCS shortcut, or do one have to start from Pimax app?

Both work for me. I could give you my complete settings for both DCS opxrtk etc. just shoot me a pm and you can do your own tests from there

[Panzerlang]

I believe that interrupt setting reduces the amount of CPU checks, not increases them.

Forgot to mention...it's made no apparent difference. What DID make a visible difference was updating my NVidia drivers. My W11 reinstall had an old 550 driver auto-loaded and it produced noticeably less micro-stutter than the most current one (566-something).

Edited December 24, 2024 by Panzerlang

[obious]

FWIW, what I found really helped is turning on Turbo Mode in the OXRTK. Obviously thats not a long term solution as its no longer supported I think

[Panzerlang]

1 hour ago, obious said:

FWIW, what I found really helped is turning on Turbo Mode in the OXRTK. Obviously thats not a long term solution as its no longer supported I think

Before my OS reinstall I was finding Pimax' native OpenXR and Quadviews to be marginally better than the external solutions. That's all I have installed now.

[Blackhawk163]

I’m about to load up the new update, hopefully this doesn’t bring back any issues.

What a weird issue this is. Seems that there’s no one fix for it all. I guess that’s the nature of pc gaming as a whole, so many different variables. 

[jurinko]

I have just reached that meta - finding out one has to use Meta quest link as OpenXR runtime and switch the turbo in OpenXR tools on. 
I had been using SteamVR as OpenXR runtime since Meta Quest Link alone stutters, also reprojection with SteamVR looked better than with Meta. 
With SteamVR, I used PD 1.2 with DLSS to have smooth performance (72 Hz all the time) above Patagonia mountains and forests. With Meta link runtime+Turbo on, I can have either PD 1.3 with DLAA, or PD 1.5 with DLSS. Clouds, visibility on max, forest settings 80%, ground shadows off. 

Specs: 5800x, 4080, 64GB, latest Nvidia driver.

[gonvise]

13 hours ago, jurinko said:

I have just reached that meta - finding out one has to use Meta quest link as OpenXR runtime and switch the turbo in OpenXR tools on. 
I had been using SteamVR as OpenXR runtime since Meta Quest Link alone stutters, also reprojection with SteamVR looked better than with Meta. 
With SteamVR, I used PD 1.2 with DLSS to have smooth performance (72 Hz all the time) above Patagonia mountains and forests. With Meta link runtime+Turbo on, I can have either PD 1.3 with DLAA, or PD 1.5 with DLSS. Clouds, visibility on max, forest settings 80%, ground shadows off. 

Specs: 5800x, 4080, 64GB, latest Nvidia driver.

SteamVR reprojection better than meta ASW? Are you sure you are activating it correctly? I'm not the one who says it, but ASW is considered the best reprojection "on the market". 

[Special K]

Am 24.12.2024 um 11:44 schrieb Panzerlang:

I already did that. It seems that DCS likes to flog one (or more) cores to 100% and that's why nobody can completely eradicate the stutter.

Can you get me your dcs.log please? I have 5 PCs with different hardware now here, from potato to powerhouse, VR and non VR, I don't see that. And I don't have stutter on my two real gaming rigs.

[Panzerlang]

6 hours ago, Special K said:

Can you get me your dcs.log please? I have 5 PCs with different hardware now here, from potato to powerhouse, VR and non VR, I don't see that. And I don't have stutter on my two real gaming rigs.

Sure.

dcs.log

It's simple logic though, going entirely from the FPS window's message of "CPU Bound".

[Special K]

vor 7 Stunden schrieb Panzerlang:

Sure.

dcs.log 130.54 kB · 2 Downloads

It's simple logic though, going entirely from the FPS window's message of "CPU Bound".

Do you have core isolation, game mode and hardware GPU scheduling disabled?
Have you tuned your Nvidia 3D settings also?

The rest is looking quite ok. Your pagefile (even if it is not needed that much) is on a fast NVMe?

If you like, you can send me your dxdiag.txt also.

[Ready]

On 12/24/2024 at 11:44 AM, Panzerlang said:

I already did that. It seems that DCS likes to flog one (or more) cores to 100% and that's why nobody can completely eradicate the stutter.

I am not seeing that. My setup is pretty much stable for the moment. Also 1% lows and even .2 % is pretty close to the FPS. It took patience and a magnifying glass to find all the bad actors. I removed quite a lot of sources for stutter and latency. Take a look at my list, there might be something in there that is of some help. I had to step down a couple of drivers too. So don't always just go for the latest.

[Panzerlang]

1 hour ago, Special K said:

Do you have core isolation, game mode and hardware GPU scheduling disabled?
Have you tuned your Nvidia 3D settings also?

The rest is looking quite ok. Your pagefile (even if it is not needed that much) is on a fast NVMe?

If you like, you can send me your dxdiag.txt also.

Yes to those three, all disabled.
One of the devs said a set pagefile isn't needed with 64GB of RAM. I'm on fast SSDs (Samsung "UFOs" according to UserBenchmark, lol).

I should point out that, in general, the micro-stutter I see is either extremely low or seen only in specific places. When I'm on the deck of a carrier for instance, looking at the other planes from my cockpit produces noticeable micro-stutter. I consider that to be very odd.

Edited December 27, 2024 by Panzerlang

[Special K]

vor einer Stunde schrieb Panzerlang:

Yes to those three, all disabled.
One of the devs said a set pagefile isn't needed with 64GB of RAM. I'm on fast SSDs (Samsung "UFOs" according to UserBenchmark, lol).

I should point out that, in general, the micro-stutter I see is either extremely low or seen only in specific places. When I'm on the deck of a carrier for instance, looking at the other planes from my cockpit produces noticeable micro-stutter. I consider that to be very odd.

You need a pagefile, that was not a good advise.
Windows virtual memory management is built around pagefiles. And you still want to have valuable RAM available and long-time-no-see RAM pages paged out, even with 64 GB. You can have it on system managed though.

Do you have resizable BAR enabled?

Edited December 27, 2024 by Special K