Which way to go? Reverb G2 on RTX 4090

[winghunter]

7 hours ago, speed-of-heat said:

not getting that here 

 

Appears to be caused by the OXRTK Turbo mode. If a mission is played for the second time via "Fly Again", its causing massive stutter.

To get around this, i have to boot openXR in safe mode or disable it

[Dangerzone]

31 minutes ago, durka-durka said:

Interesting. Ok, so that tells me it's not DCS. And I tried doing 60hz with the same 1sec stutter.  I'm about 90% sure now it's some sort of background process in Windows.  Question is how the heck to find it.

A few things that have caused issues for me in the past that might be worth you checking out:

• Windows updates deciding to update when I don't want them to.
   
• Microsoft Edge. (Wish I could remove the darn thing completely from Windows!) Seems if it is open or running in the background  I have issues with DCS, including DCS freezing if I task switch out, or performance issues otherwise when running single player. (This has happend on 2 different computers / installs for me, so I know it's not a once off), although some others don't have issues - I'd definitely make sure that it's turned off.
   
• CPU Parking (Wasn't an issue in the past, but I had stutters in 2D with DCS where disabling CPU parking appeared to resolve them). To add to this, any power saving features - disable the lot. In nVidia, in Windows Power management settings, in the BIOS. 
   
• Antivirus software scanning files that DCS loads/runs. (Try excluding the whole DCS Install and saved games directories and see if there's a difference).
   
• Sometimes it's a shader/caching issue. It will stutter as I fly over new terrain, but if I restart and fly over the same terrain a second time, the issue goes away. This normally only happens after DCS updates, but also rarely. 
   
• Some MP servers have scheduled tasks that run every x seconds, and this can cause spikes at times. Easy to eliminate this as being a cause - if you have the issues in a 'instant action' non-MP, then that's not the cause.

This is just a small list off the cuff - there's numerous threads that will add to other possibilities but could be a starting point for you.

 

[diego999]

On top of that I use OpenXR Toolkit Turbo Mode, headset configured in 72hz.

I run a PD of 1.3 configured in the Oculus App (I have a Quest 2). The important thing here is to change this setting in one place only: DCS, your G2 sofware or Steam VR in case you're using that version.

These settings should be an absolute low baseline for you as your rig is way better than mine (i5 10400, 3060ti). Start cranking one at a time and see how it goes. FPS killers in my experience are MSAA, SSAO, SSLR and clouds on the highest setting.

With this I can mantain 72fps almost all the time, except when on the ground or above a city. In SP that is. Multiplayer has higher requirements, specially on populated servers.

Edited December 8, 2023 by diego999

[Uzigunner]

vor 6 Stunden schrieb diego999:

On top of that I use OpenXR Toolkit Turbo Mode, headset configured in 72hz.

I run a PD of 1.3 configured in the Oculus App (I have a Quest 2). The important thing here is to change this setting in one place only: DCS, your G2 sofware or Steam VR in case you're using that version.

These settings should be an absolute low baseline for you as your rig is way better than mine (i5 10400, 3060ti). Start cranking one at a time and see how it goes. FPS killers in my experience are MSAA, SSAO, SSLR and clouds on the highest setting.

With this I can mantain 72fps almost all the time, except when on the ground or above a city. In SP that is. Multiplayer has higher requirements, specially on populated servers.

 

 

Thank you for posting your settings. I can see that I am not too far off from you. As said I run the G2 on 60Hz now including FFR and its quite solid. Need to test further in MP and stressful missions. In case it fails I will sacrifice the ultra clouds I guess. Maybe there is even room to crank some things up, but this will be done later on after more flight hours. For now its a good starting point.

Thanks to all who helped me getting some clarity in this setup-jungle!

 

Edited December 8, 2023 by Uzigunner

[Uzigunner]

vor 8 Stunden schrieb durka-durka:

Interesting. Ok, so that tells me it's not DCS. And I tried doing 60hz with the same 1sec stutter.  I'm about 90% sure now it's some sort of background process in Windows.  Question is how the heck to find it.

Not sure if this helps or if you have set these things already but I have also followed the steps 1-11 below, and I can imagine that point 4 could be your issue:

1. Rebar enabled
2. XMP Memory Profile
3. DCS Latest Open Beta version
4. 32GB – 64GB Pagefile (Virtual Memory)
5. Windows Game mode OFF
6. Windows Game Bar OFF
7. Windows registry Holographic PreallocateVirtualMonitors set to 0
8. Windows Holographic Shell Stopped ("Go to Computer Management → System Tools → Performance → Data Collector Sets → Event Trace Sessions. In this list, find HolographicShell, right click, and choose ‘Stop’.) 
9. Windows Power Management Ultimative Performance  
10. Windows Graphics performance for DCS set to High Performance. Variable refresh rate ON
11. HAGS OFF

The info comes from this threat:

 

 

[diego999]

A  final trick you can try is limiting the FoV. I don't know how this works on the G2, but with the Quest 2 I play with 0.85 both horizontal and vertical. This option cuts the outermost pixels of the image, saving some GPU power by not rendering, in my case, 15% of the pixels every frame.  

With the Quest 2 for me that number is the limit. Any more than that and I start to see an ugly black box around the image. But at 0.85 I don't even notice the missing part and I'm saving a considerable amount of pixels that can be applied in the center where it matters.  

You can try reducing it a bit, say 0.95 and see if you notice it. If not, reduce it a little more. When you see the edges, that's too much.

[freehand]

How anyone with a 4090 can have issues with dcs is beyond me.

[Uzigunner]

vor 17 Minuten schrieb freehand:

How anyone with a 4090 can have issues with dcs is beyond me.

Oh there are so many ways to FU the system, this can be achieved easily, even with a 4090.

[freehand]

6 minutes ago, Uzigunner said:

Oh there are so many ways to FU the system, this can be achieved easily, even with a 4090.

lol you will have to teach me.

[Uzigunner]

vor 6 Minuten schrieb freehand:

lol you will have to teach me.

Fix the issue of @durka-durka if you are that wise. Page 1. 

[diego999]

57 minutes ago, freehand said:

How anyone with a 4090 can have issues with dcs is beyond me.

 

Oh there are people with severe stuttering on a 13900/4090 rig. DCS always finds a way to wreck you, no matter how much hardware you throw at it.

[silverdevil]

lots of people with no issues. i know some with 20 series cards and older. there does not seem to be a foolproof formula.

[durka-durka]

Thanks for the help, all. I'm slowly working through the suggestions above, so far with little/no results.  There seems to be a 1sec stutter in the server I use, so I think I've nailed that down.

As for everything else, that spike never caused stutter until I got my 7800x3D, so I'm wondering if it is causing something to react on my CPU.  When I go single player, the spike is gone and is replaced by micro-stutters.  I can't seem to win with this platform.

[Marshallman]

On 12/7/2023 at 12:26 PM, Uzigunner said:

Good day Pilots,

I´ve just upgraded from an RX 6900XT to a RTX 4090 and get a little lost in which way to go with my settings. I was tinkering with Quad View previously on AMD with good results but since the change to NVIDIA there are much more factors available now, like DLSS and DLAA and FFR via OXRTK. As I have missed the wave with DLSS & CO, I would really appreciate if someone could post a screen of the DCS, NVIDIA and/or OXRTK settings to have a good starting point. I have tried 60Hz mode but got some stuttering and can see some flickering in bright scenes, but I guess it might have been caused by some other setting mistakes. I fly 90% of the time rotor wings.

Main questions:

• Go for 45fps + Repo, 60 Hz Mode or 90fps using some new technique (DLSS etc.)?
• Go for Quad View again or stay with OXRTK only?  
• Upscaling? Yes / No / Which one?
• Sharpening - Which one?
• Antialising technique - Which one?
• PD adjustment in combination with FFR or QVFR? Heard that modifying the Quad View allows high center PD. Anyone tried this?
• DCS Settings which shall be definitly avoided in VR?

I strangly got some heavy increase in brightness and needed to go to gamma correctiion 1,0 to have somewhat ok visibility.

Help !

Thanks in advance,

Uzi

 

 

Ignore the first couple of my posts but 60hz is deffo the winner I have tried Quad views but cannot avoid the stutter.
There is a combination of my settings there which should help
You can see the effects of FFR on your screen bysliding your goggles up and playing with the settings in OXRT
It changes it live, not as default but in Custom where it gives you both fractions and size

 

 

Edited December 10, 2023 by Marshallman

[Marshallman]

Following this above, here are my settings. I have tried for months to get better but this gives me smooth runs in Persion Gulf F16 instant action.Same with the Huey and the apache which takes a lot more graphic handling

Lots of fps variation on different servers I notice.

Only the first page of OXRTK is active nothing else is being used.

My resolution has been at 1980, 2860 and it makes very little difference so I am now running at the settings shown.

I know very little about VR but I have literally spent Months on trying every potential best option, and for me, these are the best.
Hope it helps
Regards

 

 

Edited December 10, 2023 by Marshallman

[Uzigunner]

vor 7 Stunden schrieb Marshallman:

Following this above, here are my settings. I have tried for months to get better but this gives me smooth runs in Persion Gulf F16 instant action.Same with the Huey and the apache which takes a lot more graphic handling

Lots of fps variation on different servers I notice.

Only the first page of OXRTK is active nothing else is being used.

My resolution has been at 1980, 2860 and it makes very little difference so I am now running at the settings shown.

I know very little about VR but I have literally spent Months on trying every potential best option, and for me, these are the best.
Hope it helps
Regards

 

 

 

 

Thanks a lot for sharing your setting! Very interesting approach, I will definitly test this. 

Regards

 

 

 

[winghunter]

I'm wondering why supersampling will also reduce the frame rate. Like most 4090 owners im entirely CPU bound. But if I go up to 2x supersampling my framerate drops about 10%.

From my understanding higher resolution should only affect the GPU not the CPU.

VRAM went from 7Gig to 10Gig so still plenty of room

Edited December 31, 2023 by winghunter

[Phantom711]

@winghunter

More pixels to be calculated means more work for the GPU. The fact that you still have VRAM left has not much to do with it. At least that‘s my understanding.

I have pretty much the same specs as you and one is not ENTIRELY CPU bound with a 4090 in VR. Fly low over the Mariannas in a jet (free flight) and you will most likely be GPU bound. Same goes for Gaza and several other complex areas.

Edited December 31, 2023 by Phantom711

[winghunter]

On 12/31/2023 at 4:40 PM, Phantom711 said:

@winghunter

More pixels to be calculated means more work for the GPU. The fact that you still have VRAM left has not much to do with it. At least that‘s my understanding.

I have pretty much the same specs as you and one is not ENTIRELY CPU bound with a 4090 in VR. Fly low over the Mariannas in a jet (free flight) and you will most likely be GPU bound. Same goes for Gaza and several other complex areas.

 

I just flew the Tomcat over Marianas and was always CPU bound. I have all settings to high / ultra, even shadows. MR enabled

Resolution is 3500x3000  Q3

Edited January 2, 2024 by winghunter