Oculus Rift Causing Severe Stuttering

Any issues, problems or troubleshooting topics related to computer hardware and the Prepar3D client application
Rlbomber
Posts: 15
Joined: Mon Jul 16, 2018 12:32 am

Oculus Rift Causing Severe Stuttering

Postby Rlbomber » Mon Nov 26, 2018 1:53 pm

I recently upgraded to Windows 10 home edition and reinstalled Prepar3d v4. Prepar3d works great without the Oculus Rift enabled but as soon as I enable the Rift, everything stutters extremely bad. As soon as I close Prepar3d, the Rift works fine.

The Oculus works fine in other simulations such as IL2 with no issues as well.

There is something causing this stuttering/lag within the Prepar3d program and cannot seem to locate the culprit.

Any help would be appreciative.

User avatar
Kayla Kinzel
Lockheed Martin
Posts: 1268
Joined: Mon Aug 01, 2016 5:59 pm

Re: Oculus Rift Causing Severe Stuttering

Postby Kayla Kinzel » Mon Nov 26, 2018 2:56 pm

Hello,

Have you gone through the general debugging steps?
https://prepar3d.com/forum/viewtopic.ph ... 2&t=123246

Regards,
Kayla
Prepar3D® Software Engineer

toutenglisse73
Posts: 62
Joined: Fri Jun 30, 2017 10:52 pm

Re: Oculus Rift Causing Severe Stuttering

Postby toutenglisse73 » Mon Nov 26, 2018 5:12 pm

Hi!

You have very bad fps with your settings - guiving bad / stuttery experience in VR.

Sim objects (your plane, traffic, the world's objects and autogen objects, weather) put a very higher load on the first cpu core (main rendering thread) in VR compared to a screen (in P3D).

If you have a hyperthreaded cpu (intel i7 or amd ryzen with smt) you will help a lot your experience in VR and P3D by turning hyperthreading off in bios (this gives more "capacity" to the main rendering thread).

Than, if you want at least 45fps+asw with your Rift (smooth enough experience) you'll have to reduce settings (scenery/autogen objects, shadows, weather) compared to smooth screen settings.

Rlbomber
Posts: 15
Joined: Mon Jul 16, 2018 12:32 am

Re: Oculus Rift Causing Severe Stuttering

Postby Rlbomber » Mon Nov 26, 2018 8:54 pm

Toutenglisse,

The Oculus Rift worked beautifully prior to upgrading to Windows 10. I was using Windows 7 and had no issues with the VR. I don't even get to the point where I can turn on the VR to fly.

I've uninstalled the program and deleted all files that remained. I installed the sim and tested the Rift prior to doing anything or adding anything further and still having the same problems.

Again, the Oculus works fine even when Prepar3d is open, it craps out when I go to fly. I don't even turn on the VR and the bad stuttering appears.

It seems that the only difference that I can see between Windows 7 and Windows 10 is that Windows 10 is using DirectX 12. Could that be the issue?

elmucki
Posts: 136
Joined: Mon May 20, 2013 9:17 pm

Re: Oculus Rift Causing Severe Stuttering

Postby elmucki » Tue Nov 27, 2018 1:34 am

you upgraded windows? meaning you updated on top of windows 7 to 10 or you formatted the drive and did a fresh install? Only reason i ask is that i too have the rift and had severe issues from "updating" but it worked flawlessly when doing a fresh install.

Rlbomber
Posts: 15
Joined: Mon Jul 16, 2018 12:32 am

Re: Oculus Rift Causing Severe Stuttering

Postby Rlbomber » Tue Nov 27, 2018 2:44 am

I did a complete fresh install. All programs were installed after the install of windows 10.

This is very strange, as soon as I load a flight, the Oculus goes haywire. As soon as I shut down prepar3d, the Oculus works fine.

alex1981
Posts: 3
Joined: Mon Dec 03, 2018 5:27 pm

Re: Oculus Rift Causing Severe Stuttering

Postby alex1981 » Mon Dec 03, 2018 5:46 pm

i have same problem

Hi, I bought oculus rift, it works fine, but when I use it with prepar3d v4.3 it behaves strangely, when I open the virtual reality prepar3d works in jerks, while if I open another program at the same time, prepar3d becomes fluid, but in this way I can not use preapr3d because the airplane's commands do not work, I have also reinstalled the oculus program. My Pc have: i7 7700K, gtx1080Ti, 16gb ddr4 3200 mhz ram, ssd samsung, motherboard Msi z270. I hope in you help.


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