Frame rate drop to 15 fps when Halo window is in focus

[jayeffaar]

Hi folks. I installed this mod today. First without and then with Chimera. Even though the game runs in VR, it is stuck at a frame rate of 15 fps in the starting menu. While troubleshooting, I found out that as soon as I click on another window on my desktop, the Halo menu frame rate shoots up to 120, and the animation in VR is butter smooth. Click on the Halo window again, and the frame rate immediately drops back down to exactly 15 fps. Same thing happens once in the game proper.

I suspected it could have had something to do with audio being off when Halo isn't focused, but turning off the menu audio in chimera.ini (which did affect the audio, thus confirming Chimera was installed properly) had no effect on frame rate, and the fps still dropped when the Halo app had focus.

I couldn't find anything related to that in installation instructions or this forum, and I am sorry if I missed something obvious.

[Edited to add that running the game as Administrator didn't help.]

Any suggestions?

[jayeffaar]

After asking about it on the flat2VR discord, it was suggested that it may have been something similar to crashes other users experienced when the Halo window was in focus, and the nvidia overlay was used. I wasn't using the nvidia app, but I disabled other apps that might have had a similar effect, and that fixed my frame rate issue. I am not 100% sure which app was the cause, but I suspect it was the Xbox GameBar, which I disabled from the Windows 10 GameBar menu.