Rift S, stuck at 40 or 80 fps

[flibustierkaki]

Hello,

 

I am having some trouble with the game. My setup is a 2060 super, ryzen 3600, 16gb ram and a rift S.

 

SS on steam VR is set at 120%. Using FPS VR, I noticed that I am either stuck at 40 or 80 fps. It looks like whenever the games goes to 75 fps, then it gets stuck at 40fps ang GPU usage goes to 45% usage.

 

So it looks as if there is some kind of "vsync" equivalent that is enabled somewhere. When I take the graphics down a lot, I can stay at 80 fps but I would like to stay at 70-80 and not get stuck at 40 fps.

 

I tried using Oculusdebug and disabled ASW, and disabled Vsync in nvidia control panel, put the settings on max performance. However, I still have the same problem.

 

Does anyone have the same problem ? Thanks a lot for your help.

[dburne]

2 hours ago, flibustierkaki said:

Hello,

 

I am having some trouble with the game. My setup is a 2060 super, ryzen 3600, 16gb ram and a rift S.

 

SS on steam VR is set at 120%. Using FPS VR, I noticed that I am either stuck at 40 or 80 fps. It looks like whenever the games goes to 75 fps, then it gets stuck at 40fps ang GPU usage goes to 45% usage.

 

So it looks as if there is some kind of "vsync" equivalent that is enabled somewhere. When I take the graphics down a lot, I can stay at 80 fps but I would like to stay at 70-80 and not get stuck at 40 fps.

 

I tried using Oculusdebug and disabled ASW, and disabled Vsync in nvidia control panel, put the settings on max performance. However, I still have the same problem.

 

Does anyone have the same problem ? Thanks a lot for your help.

 

It is called Oculus ASW.

https://developer.oculus.com/documentation/native/pc/asynchronous-spacewarp/

 

When active (default) if fps drops much below the 80 fps for Rift S , it will drop it to 40 fps and interleave every other frame with a projection of where the frame should be. Can cause some graphic anomalies like ghosting of plane as it flies by. You are still getting 80 fps, but every other frame is a projection of where it thinks it should be.

 

You can control ASW while in game using the keyboard shortcuts for ASW as follows:

 

Control-Numpad1: Disables ASW and returns to the standard rendering mode.

Control-Numpad2: Forces apps to 40Hz with ASW disabled. Depending on the application, you are likely to experience judder.

Control-Numpad3: Forces apps to 40Hz with ASW enabled. Enabling and disabling ASW will help you see the effects of ASW.

Control-Numpad4: Enables ASW. ASW will automatically turn on and off, depending on whether the app maintains a 80Hz frame rate. This will be the default rendering mode when ASW is officially enabled in the runtime.

 

Alternatively, you can use the Oculus Tray Tool ( Third Party App) to control ASW on a per game basis amongst other things.

Just set up a profile for each game  you want to use it in. I have used this for a long time, works very well.

https://forums.oculusvr.com/community/discussion/47247/oculus-traytool-supersampling-profiles-hmd-disconnect-fixes-hopefully/p1

 

Lastly, consider using Open Composite with your Rift S rather than Steam VR. It is leaner and meaner and most folks (including myself) find better performance using it with Rift. Note you also can set SS for your Rift S on a per game basis in Oculus Tray Tool.

https://www.reddit.com/r/oculus/comments/9nxixe/systemwide_installation_for_opencomposite_released/

 

Hope this helps,

 

Edited July 23, 2020 by dburne

[flibustierkaki]

Hello dburne, you're right. I thought that using oculusdebugtool would desactivate it, but obviously it had no effect.

Thank you very much for your answer, I'll also install the tray tool and open composite today.

[dburne]

2 hours ago, flibustierkaki said:

Hello dburne, you're right. I thought that using oculusdebugtool would desactivate it, but obviously it had no effect.

Thank you very much for your answer, I'll also install the tray tool and open composite today.

 

You are most welcome , have fun!

[WWSitttingDuck]

first, big thanks for the info in the thread.  Saved me a lot of time.

 

On 7/23/2020 at 7:12 PM, dburne said:

You can control ASW while in game using the keyboard shortcuts for ASW as follows:

 

Control-Numpad1: Disables ASW and returns to the standard rendering mode.

Control-Numpad2: Forces apps to 40Hz with ASW disabled. Depending on the application, you are likely to experience judder.

Control-Numpad3: Forces apps to 40Hz with ASW enabled. Enabling and disabling ASW will help you see the effects of ASW.

Control-Numpad4: Enables ASW. ASW will automatically turn on and off, depending on whether the app maintains a 80Hz frame rate. This will be the default rendering mode when ASW is officially enabled in the runtime.

 

unfortunately these keys overlap with the defaults for quick zoom in vr.  Could not for the life of me figure out why I would drop from 80fps at the start of the game to 40 a minute later.  It was because I had zoomed...and kicked in an un-wanted ASW setting.

 

Easy fix of course.  I just deleted the defaults in keymapping, and changed them to something else.  

[Riderocket]

Is there a way to get uncapped 80+ fps on rift s?

[dburne]

1 hour ago, Riderocket said:

Is there a way to get uncapped 80+ fps on rift s?

 

No.