Hello all,

Im still pretty new to VR -- trying to find a good settings/performance balance along with learning all the ins/outs of the technology.  Running Oculus Rift on P3Dv4 using FI and tray tool. 

I feel like I have a pretty good understanding of using FI and tray tool at this point.  Things seem to run stable/smooth during the beginning of a flight up until I climb through about 25-30 thousand feet; performance then gets really erratic. Monitoring the performance in the HUD built into Tray Tool has my sim FPS and performance headroom values jumping all over the place.. performance headroom drops as low as -150%.  Graphically this equates to lots of flashing/artifacts and jumpiness in the headset along with sound cut outs.  Seems like something is pretty messed up, just find it strange that things start off well and then degrade over time.  Was just looking to see if anyone has seen this before.

Thanks! 

As you move away from the ground, your fps, should if anything be getting better. Are you flying up into some funky cloud layers?

Have you tried native VR, yet?

Same results?

I don't seem to be having much better results with native. Ran a test with in game settings turned down low. Still seeing very erratic readings in the perf HUD. There seems to be a difference when I change between high/low speed ASW from within FI as well. When I have it set to low I experience ok performance down low but things get worse with altitude or might be time. 

A good area to start with in VR that should give you the best performance (smoothness at 45->90 fps) is out of Grand Canyon West - but get the free BlueSky scenery for much better photoreal scenery: http://www.blueskyscenery.com/AZ_North5West3.html

I can fly smoothly there in the Extra 300 but when I get to any major cities/airports, it gets stuttery. I am flying P3D version 4.1 and native VR. I use the Oculus Tray Tool to set Render Scale Factor (Super Sampling) at 1.5 for better clarity. Just set up a profile for P3D.exe and start the Tray Tool up before you start P3D.

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

Dave W.

Something is definitely not right.  Just ran some testing with graphics settings turned down to low.  Im still getting very jumpy FPS/Perf headroom values after about 5-10 mins in the air.  Might be headed for a reinstall of everything.. im starting to wonder if my overclock settings aren't mixing well here.  Not sure what else to do.

Turn asw off completely and see what happens......

@OP,

    Make sure that your CPU isn't throttling down in clock speed. Make sure you set  any Power Management modes for both CPU and GPU to maximum performance.

Good luck

 

Dave W.

FWIW, I'm seeing roughly the same issues as the OP. I have a i7-8700k, a 1080-ti card and 16-gb of RAM, so you'd think I could get some decent frame rates out of P3D.

I'm using middle ground settings (medium autogen, medium shadows, etc.), no FSAA and MSAA is just set to 2X. No dynamic lighting or HDR either. I do have Anisotropic set to 16X and I'm running ultra textures, but again, something I think my CPU and GPU should easily handle. I can score frame rates in the 100s on a 1080p monitor with Megascenery Earth scenery at fsDreamTeam's KIAH. But go to VR and my frame rates drop to 30 or below, my VR frames hover between 25 and 45 and my performance overhead goes crazy between +90 and -100 constantly. And this is with a stock Maule, not a PMDG plane.

I have speed stepping turned off, all power settings to max performance and no asw. I'm seeing my GPU pretty much maxed out percentage-wise, but the CPU cores only get to about 50% usage.

I'm completely perplexed as to how the difference could be so severe with my hardware so up to date.

Anyhoot, apologies if this looks like thread hijacking. I really just wanted to let the OP know that I'm seeing the same issues, so don't feel alone! :)

hi have same issues I use afs2 and this always ran pretty smooth now a lot of shimmering asw drops the frames down to 45 normaly ran constant 90 also performance header drops into red and displays -34 nothing has changed with my system i7 [email protected] 16g ram and gtx1080 ran stress test temps down at 60 no throttling so can't understand what has changed but takes away the enjoyment of using vr even tried different settings in afs but makes no difference hope someone can come up with a answer, wonder if this just affects rift headsets .  Just like to add that using afs2 in 2d I get about 150fps ultra settings with shadows and buildings on high.

jim

Edited December 6, 20178 yr by jimimac
more info

I turned ASW off completely and that seemed to help.  Can anybody tell me if the Tray Tool performance HUD has a tendency to be inaccurate? I've been running some more tests and its telling me that my application fps and performance headroom are plummeting off the graph yet the visuals and sim are running perfectly fine.  Ultimately I feel like im close to being at a good spot with VR, the only issue im still having are these strange vertical lines coming up from the ground in populated areas (maybe from autogen?)..  doing some reading on it pointed to hardware overload but my temps/loads are perfectly fine when I monitor during VR sessions.  Kind of stumped there.  

I too notice application frames just keep dropping but things still run smooth with the odd stutter maybe something is wrong with the tray tool software, I believe the tray tool is now included in the oculus download before it was a seperate download which I never installed and didn't have any problems so I think it is not a hardware problem.

jim

 

Turning off ASW definitely has helped me. Not sure about the tray tool graph, though. Where I tend to see stutters in the sim is usually when the performance headroom is jumping back and forth between 100+ and 100- rapidly. Sometimes the headroom will constantly be in the negative and everything looks smooth, but frames are dropping constantly. I know enough to know that frame drops are not a good thing, even if the view looks smooth.

I'm just trying to figure out how to keep the headroom in the positive and still get good frame rates. Last night I totally ditched my old .cfg file and started from scratch. For me the frame rate starting decreasing when I modified anything to do with the scenery settings. Autogen along with the level of detail radius settings really impact my frames and lead to stutters when turning my head back and forth in VR, even if the FPS stays in the 75-90 range. Shadows definitely have an impact as well, but less so for me (so far) than any of the scenery settings. I'm going to play with them more tonight and try to find the sweet spot.