Honestly, my impression was that almost nothing ran on Macs, and I gotta say I only recently checked which steam games I owned ran on my Mac and surprisingly the majority do. I haven’t tried them all, but the ones I did ran well. I’m sure this is dependent on what you are playing, but I’ve put a ton of time into Civ6 since realizing this last week and it works great. Not saying gaming on Macs is amazing but I think it’s probably better than most people think.