I guess the beefier your system is the less you will notice the impact of a greedy OS (because thats a fixed/absolute overhead) while the performance hit of having to translate directx through Proton will always be there (because that’s a percent-based overhead for each rendered frame)

So for the most top-end rigs, probably still Windows will squeeze a few more FPS. But it’s close.

At the end of the day Linux and Windows are both pretty comparable for gaming performance, so we shouldn’t worry about that as a deciding factor in which OS to choose, and can decide based on other merits.

On the other hand, some testing has found that running games on Linux with Proton is actually faster than with Windows on the same hardware, because Windows is such a resource hog.

The hardware in in this test being the Legion Go steamdeck rival.