I've got thousands of hours gaming on linux and I've never had an alt-tab problem. Kind of weird to go right to claiming people are outright lying, maybe there's another issue you're running into?
Rule 1 for having a good time on HN: Never argue with a green account.
If you actually have any solid rationale against my position other than the lies of these things never happening (even though on proton db there are reports of it happening in games).
Most of the arguments have anecdotes about how it works fine for them and then claim I am making anecdotes myself even though I have a very large steam and gog library and have tried a good sample of games on at least two machines now and a few distros. It isn't anecdotes when you have made a lot of effort to investigate the viability.
I really want to stop using Windows but unless the gaming situation improves I can't and people pretending these issues such as the ones I have mentioned don't exist they won't get solved.
Anyway it will be back to lurking again because this place is a total hive mind.
My green account rule is separate to the matter.