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There's still room for improvement, but Linux gaming has come a long way in a short time.
(lemmy.world)
I remember when Proton launched it was like magic playing games like Doom and Nier Automata straight from the Linux Steam client with excellent performance. I do not miss the days of having the Windows version of Steam installed separately.
Oh they do, but I don't know what the real reason it stays that way. The only things I could come up with is that they simply don't care, backwards compatibility (that one doesn't really make sense to me), or finally that they can't come up with a better version due to the mathematically good ones already exist in Unix and Linux systems under the GPL.
I'll be honest, I can't see that last reason stopping them, but who knows.
This article really shows the differences:
https://www.pugetsystems.com/labs/hpc/POV-ray-on-Quad-Xeon-and-Opteron-579/
It's a bit old now, but the point still stands. I'm sure the schedulers across all systems have improved since, but it's a fact the Unix/Linux systems are still better and more efficient.