WipeUout

Correct! Did un-checking the parallel projection box in pitool helped?

OpenXR going forward. the combination OpenXR + OXRTK offers all the settings required to adjust quality and performance in most scenarios. For me it is a significant gain over SteamVR in both GPU and CPU frametime which allows 90FPS in most scenarios.

and in pancake mode...

Since MT was introduced, in all my testing, my CPU FT never exceeded 4.5ms in DCS. This was the case also with my i7-12700KF. If your CPU is bottlenecked in DCS, then you have something eating CPU cycles in the background. Maybe you should consider a fresh windows install.

Are you sure about that? It should be the other way around. Try to monitor your core load with something else like the performance tab of task manager.

Parallel projection is not needed, this will screw your alignment and might help with your IPD problem. 1.25 in pimax client = 156% upscale 1.2 DCS PD = 144% upscale You are better off to use 144% which is less demanding.

No need for Parallel projection, this might solve your problem!! If you use 1.25 resolution, this equates to 1.25 x 1.25 = 156% upscale which is very demanding for a 3090. Use the DCS PD at 1.2 instead or the resolution in OpenXR Toolkit.

Pixel Density in DCS VR settings. With a PD=1.2 you are effectively upscaling your image by 144% (1.2 x 1.2). I use glasses which already limit my FOV, that is why I use normal FOV and it is already much larger than most VR HMD. The IPD is weird indeed, my measured IPD is 66 but I have to set it to 60 to get best view. Try using different thickness face foam, this might help also.

Your CPU should not be the botleneck, an i9-12900kf is pretty good. Unless you are not using DCS-MT?

The 8k+ is getting a 5k image from your system and upscales it to 8k. The image quality is much better than a Pimax 5K Super and very close to an 8kX. Use pimax client, it is the most stable and reliable for OpenXR and you need to use the OpenXR runtime to get max performance. I think the 8k+ and the 3090 has issues in the past, you might want to check that you have the latest firmware installed. From an image quality perspective, you need to upscale the image close to 150% either with a PD of 1.2 in DCS or in OpenXR toolkit (resolution) to get the best possible result. The problem is that it will require a lot of horsepower from the GPU and you will need to use FFR in OpenXR Toolkit along with motion smoothing. Also keep your HMD refresh rate at 72hz and your FOV at normal.

First, are you using Pitool or Pimax client? You should use pimax client 1.10 Next, do you have a lighthouse? If you don't, then it will work as well but only for 3DOF (head yaw, pitch and rotation). Next, are you using the latest version of PimaxXR (0.3.4) and OpenXR toolkit (1.3.2) For other settings and advice, look at my post here: There is also your hardware, what is your setup?

As pointed out by @some1, your GPU does not have any headroom, it is at 100% usage. No matter how you spread the workload between CPU cores, the result will be the same. That is not to say that the software side can't be improved further, OXR vs SVR is a good example. I think there's the performance improvement potential until we get the 7090ti...

It is the other way around, the CPU is feeding data to the GPU. This is why we saw FPS improvement with the introduction of MT. Having a core dedcated to the graphics pipeline made a difference of almost 1ms in GPU frametime for me.

So far, the issue did not surface. After 2 hours of gameplay on my server with several crashes and landings, no issue! Thanks for the hotfix!!

Thanks mate! I did not paid attention to what was happening right before the crash, will check next time if it happens again. I will give it a try and get back to you, probably tomorrow.

Hi Pantera, great work with this script! In case you need a break from the wedding prep and all , I get a weird error whenever playing. Any idea what is causing this? I get this error playing solo or also on my server. I also attached the mission I use, I don't think there is any problem in it but you are the expert... WARZONES_MT.miz

Looks interesting but giving up on native OpenXR is too much of a compromise for me!

Well, my tests show no gain and same results on or off. And BTW, the latest version is 2.4.0.4 (march 2023) from the guy who codes it: https://github.com/Orbmu2k/nvidiaProfileInspector/releases

Tested it yesterday with newest versionof NPI and it is still not working in DCS, probably not implemented yet. The gear icon next to the rBAR option in NPI needs to turn green when enabled to confirm it is implemented in the game. For DCS, the icon remain blue.

... and using openComposite cost 1ms in GPU frametime on my system. Not only it isn't required anymore, it is less efficient.

For me it is very subtile at 60hz and I see some vibration when looking to the sides in menus and also during flight. At 90hz, there is some vibration in menus also but none in flight, everything is rock solid. I sometime also use 75hz if I absolutely need to have MSAA ''on'' but that only happens on the NTTR map away from Las Vegas... Overall, I feel less fatigue in my eyes when simming at 90hz.

Use the OXRTK FPS counter, it will give you the right picture. Does not make any sense. I have the same CPU and my CPU frametime stays around 5ms most of the time wich is way bellow 11ms (90 FPS limit). Do you use process lasso or something similar to assign core affinity? This is not required anymore with DCS MT... or you might have something running in the background that uses your CPU? You should be able to maintain 90FPS in 95% of the time. As an example, when I run the A-10A Caucasus instant action mission (close air support) my FPS drops below 90 only when CBUs explode within my filed of view. Speaking of FOV, I use normal since I wear glasses and wide FOV is completely useless for me. This will be more taxing for your system if you use the widest FOV. In any case, you should have at least 10% better performance than me with my 4080!

This is the target situation, you want your GPU to work fully and not be limited by the CPU. That is not to say that a little bit of headroom is required, I personnaly dial down some setting to ensure my GPU is running between 70 and 80% on average and can cope with flying lower or over dense/detailed terrain. But why are you still using SteamVR? OpenXR offers such better performance and quality of visuals! It is about 1.4ms GPU frametime improvement for me in my test track compared to SteamVR and the image quality with CAS also is much better.

Looks interesting, where can we find your mod?

Could be several things but share your hardware info, this will help. Before going any further, have a look at the following two posts: Clarity is first and foremost influenced by resolution. Check your Pimax client setting to ensure you are on native resolution (vs upscale) and your render quality slider is set at 1 for DCS (or global settings). Next, ensure you have also the DCS pixel density set to 1 and do not modify resolution in OpenXR toolkit. The object is to use the 8KX at 100% resolution which will give the best possible visuals. 4k per eye is a beautiful thing! Another setting that will greatly help with clarity is in OpenXR toolkit : CAS Sharpening. I set the sharpening at 100% which makes a huge difference. If you are not using OpenXR as your runtime, install a reshade mod to increase sharpening. Unfortunately, DCS by itself is blurry in VR and you need to sharpen quite a bit. Another feature that makes things a bit blurry is the atmospheric haze but that is for outside view only. If you want to reduce it, try to set the DCS gamma setting to 1.3 and have your backlit and brightness cranked up in Pimax client options. It will not eliminate all the haze but will reduce it quite a bit. This is assuming you have the horsepower to drive the 8KX at native resolution. If your hardware can't pump those 2 x 4k pixels at a sustained rate, then you will have to reduce quality settings and refresh rate if possible. Depending on your 8KX model, you may have the option of 60hz and 75hz for refresh rate which is way less demanding than 90hz. Pimax Smart smoothing also can help but then it is a compromise between "blurry smooth framerate" or "clear stutters".