How to completely disable reprojection (HP Reverb G2)?

[PicklePicklePickle]

Hello,

 

When I use fpsVR with the standalone DCS and the HP Reverb G2 (on an RTX3090), I always see a value for 'Reprojection Value', usually close to 50% even though I have disabled it. I have done the following to disable it:

 

• Disabled it in WMR options using the right controller menu in SteamVR home
• Disabled Motion Smoothing in the DCS Application-Specific setting
• confirmed that it is disabled in default.vrsettings file

 

It seems that if I do these, then the reprojection ratio should be 0 in fpsVR and I should just see the 'native' fps, stutters and all. Can anyone explain this, or correct my thinking if i'm misunderstanding something?

 

Thanks!

[YoYo]

You did it correct. Maybe its fpsVR bug if you see that MR doesnt work in the sim?

[speed-of-heat]

If your frame rate, is variable, e.g. any number between 0 and 90 then then it’s disabled. Otherwise, it might still be enabled in the default vrsettings file?

[L8Knight]

If you are seeing FPS above 45 the the rear projection is not actively engaged.  I have the 3080, got it a few days ago.  I'm actually enjoying the rear projection and I think with the G2 it may give me the best results visually.  I've set it to auto in WMR, then cranked my resolutions to the default 100 percent mark at 3000by3000ish(the default), then I can put almost every setting to High, no MSAA, full clutter and trees.  It looks fantastic and the rear projection on auto allows for FPS to go above 45 if it can, but will help you FPS if it was going to go below this mark.  Otherwise I can turn it off and put the res to the 50 percent mark with the same settings.  I've spent hours playing with the settings and this has give me by far the best gauge visuals in cockpit with zero stuttering so far.  Only a couple hours on this new setup, but so far it's my best on the 3080.

[unlikely_spider]

16 minutes ago, L8Knight said:

If you are seeing FPS above 45 the the rear projection is not actively engaged.  I have the 3080, got it a few days ago.  I'm actually enjoying the rear projection and I think with the G2 it may give me the best results visually.  I've set it to auto in WMR, then cranked my resolutions to the default 100 percent mark at 3000by3000ish(the default), then I can put almost every setting to High, no MSAA, full clutter and trees.  It looks fantastic and the rear projection on auto allows for FPS to go above 45 if it can, but will help you FPS if it was going to go below this mark.  Otherwise I can turn it off and put the res to the 50 percent mark with the same settings.  I've spent hours playing with the settings and this has give me by far the best gauge visuals in cockpit with zero stuttering so far.  Only a couple hours on this new setup, but so far it's my best on the 3080.

What's the difference between setting reprojection there instead of in SteamVR?

[speed-of-heat]

1 hour ago, L8Knight said:

If you are seeing FPS above 45 the the rear projection is not actively engaged

no thats not right; Forced will give you a frame rate of 45 or below 45, Enabled will give you a frame rate of 90, 45 or below 

Edited January 24, 2021 by speed-of-heat

[lefuneste01]

Hello, you can use OpenVRSettingsUX.exe, which is in [your steam install]\Steam\steamapps\common\MixedRealityVRDriver\bin\win64

to set reprojection option without using setting screen in VR.

(Tips from https://vr4dcs.com/2020/12/24/how-to-nail-reverb-setup/  given on C6 forum by loulou la loutre ..)

 

[PicklePicklePickle]

Thanks for that hint! I did not know you could use OpenVRSettingsUX.exe, breaking out the right controller is a pain.

 

However, fpsVR still shows a non-zero reprojection ratio. I've tried disabling it in OpenVRSettingsUX, and i've also tried setting it to use the SteamVRSetting and disabling it there. 

 

Clearly when I enable reprojection I can see new artifacts, so the setting is working. It must be that this is a problem with fpsVR, and it shows a non-zero reprojection ratio even if reprojection is disabled.

 

I found a note by one of the developers here, however it seems to imply that reprojection ratio will not take into account the WMR motion reprojection, so still not sure why it is non-zero:

fpsVR Q&A :: fpsVR General Discussions (steamcommunity.com)

 

"Yes, It should work with WMR(not tested on a wide range of testers), "Reprojection Ratio" counter will not take into account reprojected frames made with "Motion Reprojection"(WMR feature), because it is not a part of SteamVR."

 

 

[lefuneste01]

You can use graphic hints of WMR settings (blue and red boxes on upper left) to know when reproj is triggered.

[L8Knight]

On 1/24/2021 at 8:20 AM, unlikely_spider said:

What's the difference between setting reprojection there instead of in SteamVR?

Hey,

The one in the steam settings doesn't seem to work.  The one in windows MR does.  I've tried the different settings and auto seems best.  My fps is always showing 45fps, but my average is usually ab it higher 48 or so.  Not sure why that is, but it sure looks good.  If you have the F18(or comparble) set the res at 100 percent and look at the lower computer screens writing.  Then change it to 50%, completely blurry almost unreadable.  At 50 percent you might as well just use a Rift S because that's exactly where it falls apart and becomes visually limited.  My opinion, but I got the G2 so I could have every gauge completely clear and perfect looking.

[L8Knight]

23 hours ago, speed-of-heat said:

no thats not right; Forced will give you a frame rate of 45 or below 45, Enabled will give you a frame rate of 90, 45 or below 

 

Hi,

I set mine to auto, not the forced setting.  So it sits at 45, but shows an average of 48 or so.  When I'm running at the same settings without it I get 85fps, but micro stuttering when rolling the plane.  Don't know why.  I thought that maybe it's because the panel wasn't happy to be under the 90hz.  I tried setting the panel to 60hz.  That made everything really wierd, not sure how to describe it, but not right, the buildings where wierd, maybe it was the shadows?  Honestly a strange experience, think one eye might go out of sync?  Anyway with the 3080 the auto setting in WMR has been very effective in creating a great visual experience.

[speed-of-heat]

its likely getting small numbers of frames at 90 

[Strong05]

On 1/24/2021 at 10:03 AM, L8Knight said:

If you are seeing FPS above 45 the the rear projection is not actively engaged.  I have the 3080, got it a few days ago.  I'm actually enjoying the rear projection and I think with the G2 it may give me the best results visually.  I've set it to auto in WMR, then cranked my resolutions to the default 100 percent mark at 3000by3000ish(the default), then I can put almost every setting to High, no MSAA, full clutter and trees.  It looks fantastic and the rear projection on auto allows for FPS to go above 45 if it can, but will help you FPS if it was going to go below this mark.  Otherwise I can turn it off and put the res to the 50 percent mark with the same settings.  I've spent hours playing with the settings and this has give me by far the best gauge visuals in cockpit with zero stuttering so far.  Only a couple hours on this new setup, but so far it's my best on the 3080.

What do you mean by rear projection?  Where do you find this option?

[L8Knight]

33 minutes ago, Strong05 said:

What do you mean by rear projection?  Where do you find this option?

Sorry, re-projection.  New tech to me. LOL

[PicklePicklePickle]

Thanks everyone for the useful input.

 

I think one reason it has been confusing, is that in my tuning with all reprojection settings turned off, 45fps seems to be where it likes to peak and it is very hard to get it go over that.  When I start moving the airplane it goes below 45, and sometimes I see it flash 46 or 47fps, but for example when the free flight cockpit comes up and the window is being displayed, it is right at 45. Because of this, and the fact that fpsVR shows non-zero reprojection ratio, I thought it must have been enabled but it seems to be not the case.

 

if I reduce all the settings to the lowest(and PD=0.5, 20% resolution in steam VR) I still don't get 90fps, I get something like 60's, and I don't get why because fpsVR is green and the 'frametime' is low enough for 90 yet it doesn't achieve it. My system is unusual, so maybe this is because of the eGPU 22Gbps bottle beck(specs below)

 

I will try setting it to 'Auto' in WMR. When I tried the reprojection before the new artifacts(occlusion artifacts?) where very distracting so I turned it off.

 

It's not so bad at 45fps, if it weren't for the micro-stuttering when banking and looking out the side. There are streams of frames where it is perfectly smooth, but then it randomly stutters so you see the terrain jump.  I also see ghosting(doubling of terrain features) when banking at a specific rate and looking out the side, but this is less distracting than the stuttering. I tried the hotplug change and everything I could find but no luck on this.

 

Xeon W-10885M 2.4GHz-5.3GHz (Thinkpad P17)

128GB of RAM

2x Samsung Evo 980Pro (DCS is on system drive)

RTX3090 via eGPU

RTX5000 built-in but disabled during DCS

Edited January 25, 2021 by PicklePicklePickle

[GunSlingerAUS]

On 1/25/2021 at 2:03 AM, L8Knight said:

If you are seeing FPS above 45 the the rear projection is not actively engaged.  I have the 3080, got it a few days ago.  I'm actually enjoying the rear projection and I think with the G2 it may give me the best results visually.  I've set it to auto in WMR, then cranked my resolutions to the default 100 percent mark at 3000by3000ish(the default), then I can put almost every setting to High, no MSAA, full clutter and trees.  It looks fantastic and the rear projection on auto allows for FPS to go above 45 if it can, but will help you FPS if it was going to go below this mark.  Otherwise I can turn it off and put the res to the 50 percent mark with the same settings.  I've spent hours playing with the settings and this has give me by far the best gauge visuals in cockpit with zero stuttering so far.  Only a couple hours on this new setup, but so far it's my best on the 3080.

 

Have you done a merge with another fighter jet yet? When I'm flying around enjoying the scenery, reprojection is hard to notice. As soon as I am in close range of other aircraft, friend or foe, the reprojection artefacts just destroy the immersion for me. As we merge, and I follow them with my head, the ghosting of the aircraft just looks terrible. Apparently some folks can't see it though.

[otavio]

On 1/25/2021 at 6:52 PM, PicklePicklePickle said:

Thanks everyone for the useful input.

 

I think one reason it has been confusing, is that in my tuning with all reprojection settings turned off, 45fps seems to be where it likes to peak and it is very hard to get it go over that.  When I start moving the airplane it goes below 45, and sometimes I see it flash 46 or 47fps, but for example when the free flight cockpit comes up and the window is being displayed, it is right at 45. Because of this, and the fact that fpsVR shows non-zero reprojection ratio, I thought it must have been enabled but it seems to be not the case.

 

if I reduce all the settings to the lowest(and PD=0.5, 20% resolution in steam VR) I still don't get 90fps, I get something like 60's, and I don't get why because fpsVR is green and the 'frametime' is low enough for 90 yet it doesn't achieve it. My system is unusual, so maybe this is because of the eGPU 22Gbps bottle beck(specs below)

 

I will try setting it to 'Auto' in WMR. When I tried the reprojection before the new artifacts(occlusion artifacts?) where very distracting so I turned it off.

 

It's not so bad at 45fps, if it weren't for the micro-stuttering when banking and looking out the side. There are streams of frames where it is perfectly smooth, but then it randomly stutters so you see the terrain jump.  I also see ghosting(doubling of terrain features) when banking at a specific rate and looking out the side, but this is less distracting than the stuttering. I tried the hotplug change and everything I could find but no luck on this.

 

Xeon W-10885M 2.4GHz-5.3GHz (Thinkpad P17)

128GB of RAM

2x Samsung Evo 980Pro (DCS is on system drive)

RTX3090 via eGPU

RTX5000 built-in but disabled during DCS

 

 

I have the exact same problem with an RX 6800.