pre-ryzen AMD CPUs were always a bit on the budget side even when they were new. They were a bit more power efficient and cheaper, but never were amazing performance. So yeah, a 15 year old CPU is often rough, but a 15 year old low-mid end CPU is going to be even worse off.
Ive not had issues with Counterstrike 2 on linux, aside from wanting to play FaceIt or ranked matches that have stricter third party anticheat. And that’s just the anticheat being the problem.
I would venture a guess that linux is not “the problem” here and it’s more likely just aging hardware meeting increasing game demands.
The only time in recent years I’ve had specifically a problem with linux gaming performance (not related to anticheat), was playing VR on a pre-GCN AMD GPU which didn’t support async reprojection properly which caused quite a bit of stuttering.





https://docs.bazzite.gg/Dev/
There is a whole Bazzite for Devs page that mentions Bazzite-DX for development to handle some things like devcontainers: https://github.com/ublue-os/bazzite-dx
Their main website also says:
At the end of the day, its an immutable fedora distro. Which may serve your needs. or may not. And bazzite’s primary focus is on gaming. It will most likely work (given a few criteria), but it may not given that is not their primary focus.