Horrible performance - any ideas?

[II./JG77_Manu*]

Hey guys, 

 

i had a pause from (VR) flying for almost a year and came back now with a little upgrade - Rift S instead of Rift.

I used to have quite decent performance in VR, not great, but flyable both in SP and MP (with reprojection).

 

Now i still have the same PC, same specs. Used to run quite some SS back then, so i didn't even change the pixel count. But horrible performance..no matter if SP or MP, i regularly drop below 40fps, which makes flying quite impossible. I even overclocked my processor to 4,8 GhZ and my Graphics card by some margin, but it didn't change a thing. I am quite busy with my job and i don't have time to tinker for hours like i used to, back then when i was a student. Does anyone have an idea, why the performance dropped that significantly on my side? If i don't find a quick fix, i see myself leaving flight sims in general (which would be a shame), since i really wanna utilize my sparse free hours with the VR glasses.

 

Edit: seems my signature with my specs got lost in the last year. Evga GTX 1080, 16gb DDR4 RAM, I7 8700k, game on SSD

I also use Open Composite to save performance

 

Edited November 22, 2019 by II./JG77_Manu*

[Alonzo]

The recent updates to IL2 have made it more demanding on the GPU, and the Rift S does have a few more pixels than the CV1. My squad mates report they are in 40 FPS ASW a lot with the Rift S and a GTX 1080, but they don't drop below that.

 

Ensure your OpenComposite is up to date. Use 1.1 supersample with Oculus Tray Tool, and try Balanced in-game settings.

 

If you continue to drop below 40 FPS, use Oculus Tray Tool performance HUD set to "Application Render Timing" to see if it's CPU or GPU that is causing the problem. You need to be 12.5 ms or below for both GPU and CPU frame time to hit 80 FPS, and below 25ms to hit 40 FPS. But you should be able to hit 40.

[chiliwili69]

What graphics settings do you use? what Supersampling do you apply? Do you use Oculus tray tool or SteamVR to apply that?

 

You can use a very simple tool called fpsVR to display you GPU and CPU performance during the flight.

 

You can try to set SS to just 100% in steamVR. If you still get 40fps the problem is not the GPU.

 

You can also ue MSI Afterburner, it is very easy to trend multiple variables like CPU clock (just to check throttling), GPU load, cores load and temp, etc.

 

The Rift-S should run at 80fps with no problem in your PC (assuming you don´t put very high settings, like clouds, etc)

[dburne]

Something is definitely amiss, with that rig you should be getting much  better performance even with higher settings.

Running any mods?

 

Might be time for a clean graphics driver install using DDU in safe mode.

Edited November 23, 2019 by dburne

[II./JG77_Manu*]

Thanks for the tips guys, it was quite trivial to be honest. 

When i newly installed the game a couple of weeks ago i copy pasted Fenris' graphic settings into the cfg file and didn't bother with it anymore.

When i actually started flying, the latest hotfix had overwritten the graphic settings with quite high presets (most settings on high or max, AA on 2, don't ask my why).

Thanks for showing me the right direction @Alonzo, when i checked with TrayTool and saw that the processor is fine, while the graphics card is around 30 ms frametime on average i knew something was amiss and checked the graphic settings again. 

Dialing down the graphics again and doing a quick online test, i seem to get quite ok (not great but flyable) performance. 

Thanks

 

In case anyone else with bad performance reads this thread and is interested in settings / set up: Now i use Fenris copy-paste settings, Oculus Tray Tool with 1.1 SS, ASW off, Meltdown and Spectre fix disabled, and OpenComposite in it's latest version. Seem to get 80 FPS now on most occasions