Suggesting anything that isn’t arch based for a gaming focused solution seems stupid as hell to me. No matter how you cut it, there’s a god damn good reason valve picked arch as a base for steam os.

Other solutions are just not going to be as good. Will they work? Sure you could game in Debian for heaven sake and be perfectly fine.

But it’s just more possible problems. Gaming is basically the exact inverse of non cutting edge. It’s the exact worse case where even bleeding edge may not be new enough to properly support things even months after release.

If your playing 10 year old games anything does fine, but other wise your updating packages to what might be newer then your distro supports regardless as which point why arnt you just on arch where that’s less prone to explode.