Windows 11 FPS Drop Issue

rdwing
Posts: 92
Joined: Sat May 21, 2022 2:05 am

Windows 11 FPS Drop Issue

Postby rdwing » Sun Mar 05, 2023 9:17 pm

I have a brand spanking new Windows 11 installation with fresh Thetis 2.9.0.6 x64, and I've discovered a problem.

I have two monitors, the primary being a 144hz display, Thetis is always used on this monitor.
I have the FPS set to 120, and when the Thetis window is selected, the FPS drops to 60. If I deselect the window, the FPS comes back up to 120.

I'm pretty stuck here. I don't think I had this issue before on Windows 10. Thoughts?

Here's a video of the issue. I reset the database and set the program fps to 120 before taking this recording, and the issue persists.

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w-u-2-o
Posts: 5540
Joined: Fri Mar 10, 2017 1:47 pm

Re: Windows 11 FPS Drop Issue

Postby w-u-2-o » Sun Mar 05, 2023 9:40 pm

If you are using a 144Hz display, then what happens when you set your frame rate to 144Hz in Thetis and also turn on VSync?
rdwing
Posts: 92
Joined: Sat May 21, 2022 2:05 am

Re: Windows 11 FPS Drop Issue

Postby rdwing » Sat Mar 11, 2023 7:52 am

I was able to fix this by adding Thetis to NVidia control panel 3d settings and setting frame rate, vsync, and gsync options.

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