For games it's really great unless that game you're looking for has kernel-level anticheat. You can check ProtonDB for Steam games, Lutris for other platforms. If you prefer single-player games mostly like me, you won't have much of a problem.
For music, there are software like Ardour and LMMS. For video editing, you can check KDEnlive.
Before switching, I suggest you to try at least a couple different distros on a virtual machine, better if you have a separate laptop to try things. PopOS is great. You can also check Linux Mint, Bazzite and openSUSE Leap.
Oh, you mean you were waiting for tab groups. Sorry, without enough context I thought you were telling one of those bullshit reasons people use against Firefox. Well then, see you with Librewolf soon.
I haven't been playing Blizzard games for years and recently installed Battle-net again. It's nice to see their Agent updates still causing problems. /s
There are still some quirks but it's been generally fine for me with Nvidia, almost a year now.