The game slows down to a crawl while the server browser loads.

Only on the menu screen, no problems in game.

Some servers will kick you due to a timeout. I found that if you load into a match that's already started you can usually play it but during the 2 minutes when a match is loading and the server fills in you may get booted because of EAC timeout.

Some servers work fine others will boot you due to EAC timeout. Usually happens when a match begins. When you load in the game runs perfectly fine like on windows. I tried a couple versions of proton but none of them really did anything.

Also if you try to load into a server that was full you can get stuck in an infinite loop where it constantly tries to rejoin the server. I had to restart the game when that happened.

On the servers that worked though (Mega Server specifically) the game played flawlessy. No hiccups or techincal issues except it said I had a ping of 200 for some reason (it's more like 90).