I disagree - Linux actually tanks GPU performance if you’re VRAM limited. It’s extremely unfortunate, as many games now have atrocious VRAM usage for no particular reason.

If you’re not limited though, you’re absolutely right, the difference is minimal and generally within margin of error. Some CPU bound games are better on Linux though, in a measurable way, specially if you’re running bleeding edge distros.

EDIT: guys I use and love Linux, but we don’t have to downvote me to pretend it’s perfect, how about a DXVK developer confirming what I said.