There are issues with some games for sure. You'll tab in/out at the wrong times (usually loading screens) and this guarantees Wayland will crash and restart the session. But at least it gracefully dies and comes back, never had it freeze on me.
EDIT: Playing MGS5 rn and the game froze when I tabbed, locked the entire system. Can't even switch to a new tty so I'm forced to reboot.
System: high end AMD on Nix with relatively latest pkgs from unstable branch
Idk how the majority of this thread can say Wayland is perfectly stable, it's plain disingenuous.
The unofficial server yet lots of people don't know that because they were official until they suddenly weren't but then lots of these same mods are mods on the actual official discord.