Could be small or big.
My answer has always been that, Linux can't handle everything I'd ask out of it that I normally can with Windows. I know the games issue has been progressing far from the days when that used to have been an archaic flaw with Linux for the longest time. Games might not be the issue except for some concerns I have for some games.
I was taking some time a few moments ago, to check if a program called Firestorm Viewer would work on Linux Mint which could've been my distro of choice. And the description written on the linux page described exactly the kind of concerns I'd have for compatibility and usability from going Windows to Linux.
They said that their viewer was tested and designed to function mostly with Ubuntu and while it could work with other distros, it's not to be expected to be smooth.
That's the kind of sentiment and concern I have always had with Linux if I were to go from Windows to it. There are programs and tools on Windows that I have that are used for specific purposes and I know they will not function on Linux. Furthermore, incase anything breaks down, any and all solutions would only be applicable to that thing that would be far easier to solve than just being SOL if I was on Linux.
It is something as a user that I just can't simply afford to deal with on a regular basis if I made the switch.
So while I may not have too much of an issue running games, I won't have too much of an issue using alternatives, I won't have to deal with the Windows ecosystem .etc I will just be running into other walls that would simply make me second guess my decision and make me regret switching to the point where I would dip back into Windows in a hurry.
Unfortunately I'm addicted to a game that requires kernel level anti cheat. So I dual boot Fedora and Windows, but pretty much the only thing I use the Windows partition for is the game and that rare application that just works ™️ on Windows
Same here, fellow Fedora and Windows dual boot. I have a seperate hard drive for kernel level anti-cheat games: Escape From Tarkov - some PVE maps do run under Linux but PVP and parts of the map require anti-cheat.
Battlefield games from 5 onwards
Call of Duty games Coldwar onwards - do not open a call of duty game under Linux, there have been posts where it is an instant ban.
Ghosts of Tabor
I do have hope that one day the anti-cheat situation will work out where it doesn’t matter what operating system you are running but for now if I want to play some of the above games with friends for now I dual boot.