Which way to go? Reverb G2 on RTX 4090

[Uzigunner]

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

 

[speed-of-heat]

25 minutes ago, 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

 

We only have half the equation; we dont know your processor or memory etc... 

generically, with OpenXR i would recommend 60fps if you can tollerate it , I would switch on DLAA, use the DLAA sharpening value of 0.7 , i wouldn't use upscaling, PD is a way of changing the game scale, so leave it alone, I didn't get much joy out of Quadviews but that was my processor, i still use OpenXR TK I just use it for Turbo mode.  Dont play with PD, dont use motion blur, watch your shadows and i would just play with one setting at a time.

[Uzigunner]

vor 44 Minuten schrieb speed-of-heat:

We only have half the equation; we dont know your processor or memory etc... 

generically, with OpenXR i would recommend 60fps if you can tollerate it , I would switch on DLAA, use the DLAA sharpening value of 0.7 , i wouldn't use upscaling, PD is a way of changing the game scale, so leave it alone, I didn't get much joy out of Quadviews but that was my processor, i still use OpenXR TK I just use it for Turbo mode.  Dont play with PD, dont use motion blur, watch your shadows and i would just play with one setting at a time.

 

Thank you and sorry for not mentioning my other specs, thought its enough to have them in my signature. Its a 5800x3d with 64GB DDR4 CL18 RAM, both not overclocked. DCS is running on a NVME.

Very interesting, I will give the 60 Hz another try. Definitly would prefer a setting for all and deal with maybe not 100% squeezed out eye candy rather than the need to adjust setup every second flight. I The PD thing messed up my first test with 60Hz. As you say you do use the OXRTK only for Turbo Mode, is it correct that you don´t even use FFR? How comes that? 

 

 

 

[speed-of-heat]

so your experience may be different, i am CPU bound, and as i understand it FFR offloads the work from the GPU to the CPU (as i  understand it) but either way i still get the same frametimes, just a poorer image ... on my 4090. Yes currently i just use OXRTK for the Turbo

[diego999]

2 hours ago, speed-of-heat said:

PD is a way of changing the game scale

PD is Pixel Density. It provides better visual quality by supersampling the image. IPD is the setting that changes the game scale.

 

3 hours ago, Uzigunner said:

 

• PD adjustment in combination with FFR or QVFR? Heard that modifying the Quad View allows high center PD. Anyone tried this

 

That is the way to go with a G2. Due to the fresnel lenses the external part of the image you see on the headset is blurry anyways, so there's no point in wasting GPU power by rendering it at full resolution. 

QVFR is made for headsets with eye tracking. Your G2 doesn't have that, so it will function in fixed mode. Using QVFR or OXR Toolkit is up to you. Try both and see which one works better.

About antialiasing, you can try DLSS with full sharpening (1.0), or no upscaling with DLAA. TAA has very bad ghosting in VR and MSAA is a fps killer. This one is simple, so try all and see what your brain prefers.

I can share my settings tonight when I get home if you want.

Edited December 7, 2023 by diego999

[speed-of-heat]

31 minutes ago, diego999 said:

PD is Pixel Density. It provides better visual quality by supersampling the image. IPD is the setting that changes the game scale.

 

you are correct fast hands slow brain, you are still better of using OXR or OXRT Kto do the super sampling 

[Uzigunner]

vor einer Stunde schrieb diego999:

I can share my settings tonight when I get home if you want.

 

Hi Diego999,

some interesting approach where I have to dive in I guess. Did you manually modify the FFR area in OXRTK or edit the QVFR config file? I´ve done a couple of hours of testing today and got a little wiser by now, but if you can share your settings it would definitly be helpful, and not only for me I guess. The amount of "input" in this forum is so huge and depending on so many factors that someone easily can get lost.

 

 

Edited December 7, 2023 by Uzigunner

[winghunter]

OXRTK leads to searious stutters and CTD with my 4090 and G2, even with default settings. I had to disable it. Maybe due to my 6 months old Nvidia driver. But OXRTK  is no longer supported so its also to be expected to degrade.

Edited December 7, 2023 by winghunter

[Uzigunner]

vor 4 Minuten schrieb winghunter:

OXRTK leads to searious stutters and CTD with my 4090 and G2, even with default settings. I had to disable it. Maybe due to my 6 months old Nvidia driver. But OXRTK  is no longer supported so its also to be expected to degrade.

 

Strange... I used OXRTK in my Radeon era and now two weeks with the 4090 without any CTD. To me stuttering is alot better with turbo mode enabled. But to be honest, I did not try running VR without the OXRTK, so its hard to argue on the point of stuttering. If tweaking the Toolkit fails I will try your way. Thanks! 

[winghunter]

28 minutes ago, Uzigunner said:

Strange... I used OXRTK in my Radeon era and now two weeks with the 4090 without any CTD. To me stuttering is alot better with turbo mode enabled. But to be honest, I did not try running VR without the OXRTK, so its hard to argue on the point of stuttering. If tweaking the Toolkit fails I will try your way. Thanks! 

Its definitely noticable, like 1-5 seconds of stale image.

[speed-of-heat]

not getting that here 

 

[winghunter]

5 hours ago, speed-of-heat said:

not getting that here 

 

Not sure how this can happen on a fresh system, i'm updating my nvidia driver to 546.29 to see if that fixes things

Update: it did

Edited December 7, 2023 by winghunter

[diego999]

2 hours ago, Uzigunner said:

Hi Diego999,

some interesting approach where I have to dive in I guess. Did you manually modify the FFR area in OXRTK or edit the QVFR config file? 

 

 

 

No. Tried QVFR but it comes with a noticeable cpu load my old 10400 wasn't capable to bear. This should not be a problem for your 5800X3D.

I use OXR Toolkit with Quality/Wide presets. You can try all combinations ingame, as you don't need to restart dcs after changing them.

Will post my settings when I get home tonight.

[Uzigunner]

vor 40 Minuten schrieb diego999:

No. Tried QVFR but it comes with a noticeable cpu load my old 10400 wasn't capable to bear. This should not be a problem for your 5800X3D.

I use OXR Toolkit with Quality/Wide presets. You can try all combinations ingame, as you don't need to restart dcs after changing them.

Will post my settings when I get home tonight.

thanks a lot!

[Uzigunner]

ok... after some testing - some more data to share.

With my CPU-GPU-RAM combination (see signature) and paired with a standard G2 I find OXRTK definitly better than QVFR.

At a free flight in a Mi-8 over Damaskus (Damaskus Taxi mission) I achieved following results:

• QVFR: 65-70 fps at airflied, up to 85 fps in open area and 75 - 80 over rooftops in city. CPU frametime ~ 14,8ms and GPU ~ 14,0 ms. Settings with QVFR: DLSS + DLAA, Quality, PD1.0
• OXRTK: 75-80 at airfield, 90 in open area and 85-90 fps over city. CPU frametime ~ 7ms and GPU ~ 8-10 ms. Settings with OXRTK: DLSS + DLAA, PD1.0, Quality, FFR wide Performance. I can see less stuttering and get a more smooth flight. GPU headroom is somewhere ~ 2 ms.

Approximately same goes for the tests without DLSS @ 60Hz. Seems like a RTX 4090 is still bottlenecked by a 5800x3d, but its not much. As I am running mine at 80% powerlimit it might be this 3-4% loss to come equeal. Nevertheless there is no issue like that with DLSS.

Even better now would be to set 60Hz but I can see the flickering... not sure if I can get used to...

 

[speed-of-heat]

Re the 60hz flickering, turn down the gamma, it helps with noticing it, and treat it like the first time you strapped into vr, little and breaks, and this is important, do not try 90hz for at least a week if your using vr daily... Took me about 2 weeks to acclimatise..but it was worth it. Now I can slip back. And forth between 90and 60 without any problems

[Uzigunner]

vor 14 Minuten schrieb speed-of-heat:

Re the 60hz flickering, turn down the gamma, it helps with noticing it, and treat it like the first time you strapped into vr, little and breaks, and this is important, do not try 90hz for at least a week if your using vr daily... Took me about 2 weeks to acclimatise..but it was worth it. Now I can slip back. And forth between 90and 60 without any problems

Hey man, I think you were right from the beginning. I was disabling DLSS, only DLAA ON and 60 Hz, downed the gamma and here you go. best quality, best clarity and from all the testing today (nearly 8 hours) by far less stutters. The 60 frames stay like a tank, no matter what comes or happens. I do use FFR on wide and performance as I cannot see any downside. Concerning the 60Hz, I notice the flickering only in the menu and the WMR Lighthouse Area, so absolutly unimportant. Ingame it is not noticeable for me and even a better experience because of the less or no stutters. Also 90° looks out to the window does not hit performance or smoothness, something which was a pain since years. I guess I keep this for now and will have a look how it behaves with longer missions. Thank you for your help and time. 

[durka-durka]

8 minutes ago, Uzigunner said:

Hey man, I think you were right from the beginning. I was disabling DLSS, only DLAA ON and 60 Hz, downed the gamma and here you go. best quality, best clarity and from all the testing today (nearly 8 hours) by far less stutters. The 60 frames stay like a tank, no matter what comes or happens. I do use FFR on wide and performance as I cannot see any downside. Concerning the 60Hz, I notice the flickering only in the menu and the WMR Lighthouse Area, so absolutly unimportant. Ingame it is not noticeable for me and even a better experience because of the less or no stutters. Also 90° looks out to the window does not hit performance or smoothness, something which was a pain since years. I guess I keep this for now and will have a look how it behaves with longer missions. Thank you for your help and time. 

Thanks for posting your testing results.  Question: What is FFR?

 

7800x3D + 4090 + 32gb Ram and I'm getting high FPS (60min), somewhere around 10 frametime, but anytime I look 90deg out the window it's a stuttering mess. I've got everything turned off. Only thing I can think of is I have OpenXR enabled. 

[Uzigunner]

vor 1 Minute schrieb durka-durka:

 What is FFR?

 

Fixed Foveated Rendering. You can enable it in the OpenXR Toolkit by mbuccia.

[Phantom711]

vor 33 Minuten schrieb durka-durka:

Thanks for posting your testing results.  Question: What is FFR?

 

7800x3D + 4090 + 32gb Ram and I'm getting high FPS (60min), somewhere around 10 frametime, but anytime I look 90deg out the window it's a stuttering mess. I've got everything turned off. Only thing I can think of is I have OpenXR enabled. 

Are you sure you have the 60Hz mode of the G2 enabled?

[durka-durka]

4 minutes ago, Phantom711 said:

Are you sure you have the 60Hz mode of the G2 enabled?

I don't have it on 60hz, just 90hz right now.  I'm about to try that in a min. 

I'm seeing a stutter about every second, or just under a second. It's there whether I'm over terrain or city. You can see the jump in this graph that I'm posting.  Funny thing is, I'm running at around 80fps with 4-8ms frametime.  It's gotta be something to do with memory or DCS.

[Uzigunner]

vor 5 Minuten schrieb durka-durka:

I don't have it on 60hz, just 90hz right now.  I'm about to try that in a min. 

I'm seeing a stutter about every second, or just under a second. It's there whether I'm over terrain or city. You can see the jump in this graph that I'm posting.  Funny thing is, I'm running at around 80fps with 4-8ms frametime.  It's gotta be something to do with memory or DCS.

What kind of tool you are using here for fps and frame time check? I could make a test too.

[durka-durka]

6 minutes ago, Uzigunner said:

What kind of tool you are using here for fps and frame time check? I could make a test too.

RCtrl+Scroll Lock 

It's the DCS native frame counter. Not sure what it's called in the keybindings.

Edited December 7, 2023 by durka-durka

[Uzigunner]

vor 14 Minuten schrieb durka-durka:

RCtrl+Scroll Lock 

It's the DCS native frame counter. Not sure what it's called in the keybindings.

 

Found it.

this is what it looks like over Damascus with 60Hz. And here you can see the FFR at work, the outer, not seen part, is low resolution. There are some spikes here and there, but nowhere regular and every second.

 

 

Edited December 8, 2023 by Uzigunner

[durka-durka]

55 minutes ago, Uzigunner said:

Found it.

this is what it looks like over Damascus with 60Hz. And here you can see the FFR at work, the outer, not seen part, is low resolution. There are some spikes here and there, but nowhere regular and every second.

 

 

 

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.