That's the distro i'm using. I've switched away a few times, but I end up back at Garuda.
It's been pretty painless in regards to gaming.
Every time i try to switch to something that doesnt have aur/chaotic, i tend to miss it.
It's also nice to have something to lean on when you don't have the answers between the os, wiki, and forums you should be able to figure out whats going wrong.
Be wary of GPU drivers. AMD used to work fine, but nvidia can sometimes get wonky and either make booting slower than it should be or just outright break your X server. But overall games work super smoothly nowadays with Proton, and you can even run non-Steam games with it.
And if you're not acquainted with it, the Arch Wiki is always useful, but specially for arch-based distros like that one.
It's one of the window system on top of which gnome or other desktops run. But I misspoke there, what usually got messed up was the display manager, specifically lightdm.
But if everything is running fine I doubt you'll have any future issues. Just remember to check nvidia-smi in case of FPS drops to see if the game is using the GPU.