To provide some additional anecdotes to support jul's comment. I've personally been experiencing better performance than windows even with nvidia. Though it does vary per game, with the occasional workaround especially when going outside the realm of plug and play to mod games.

I'd say most games are great, the "10% low" games are still good, and the "1% lows" where things just don't work are pretty rare but sometimes there is a fix. Proton.db is a good resource for those instances.

And being honest... windows has those moments too, people just ignore them because windows is the ubiquitous gaming OS.

It's a lot better than when I had last "tried" and it may be more impactful to bring up that this time I haven't gone back even once, and I actually went ahead and pulled the plug on my windows partition.

Linux is just better now, there's one thing windows had but I gave it up. Linux is just better for most things now and to make that win even better.. windows has increasingly been becoming worse than itself.