The other one was very very underpowered so I threw CasaOS onto it

How did you get past the website? It's bloody awful :o

Joking aside though, I hadn't heard of CasaOS, so I just did a quick search. That website is awful on mobile. I swiped up, assuming that there was more than just the live demo link, but nothing happened for a while. Then, loads of content popped up at once and scrolled past >.<

I've sent it to myself to check out on the computer. Hopefully, if it does what it claims, it could resurrect an old laptop :)

Usually. Proton by Steam (versions of wine tuned specifically for games) makes just about anything run flawlessly with one click to turn it on in the settings and occasionally some fine tuning for particular games like setting it to run a particular version of proton. This works on any Linux distro.

Outside of Steam, and when trying to mod Steam games, it's a lot more hit or miss.

You can check if your Steam games work on Linux in general here: https://www.protondb.com/. PopOS is a noob friendly distribution well adapted for gamers and artists.

Let's all thank the steam deck. Now Linux is bigger in gaming than mac

The bad news, for me at least, is yes I can get most games to run fine. Skyrim, cyberpunk, Sims 4 etc. The issue is modding. Sims 4 is excluded from this as you littlery just drop .package files in the mod folder and just works. But games like cyberpunk and Skyrim...you often need external tools/injectors/animation riggers etc for a lot of the 'good stuff's. And getting those tools to work properly can be a nightmare.

There are definitely "quirks", even with a lot of the gold/platinum rated games on protondb. E.g. Titanfall 2, horrible crackling audio issues at times, even though it runs great otherwise. Firewatch, random choppy slowdowns, but rare. BattleBit, sometimes (not too often) 20 seconds of 20fps, then back to normal.