Thanks for recommending gamescope. I was trying so hard but it wasn’t working, turns out it was because I was using the flatpak version of steam and gamescope. When I installed the fedora steam (rpm-fusion) and gamescope, it worked without any issue.
I know that it is possible to run gamescope on flatpak steam, but it didn’t work for me.
4k FSR boosted my fps from 60 to 100 and it maybe looks even better, it blew my mind.
The
-F fsr
didn’t work for me, but the resolutions that are between 1080 and 1440, and 1440 and 2160 are fsr upscaled from what I understand, so that worked for me.