I dont have CS2 because, well, the obvious reasons. But I do have the original Skylines, and its linux version is also a festering pile of rancid dogshit.

Running the windows version via proton made it run smooth, stable (well, as stable as can be expected with a few hundred mods…lol), and without headache.

so yeah, install windows version and use proton. Overall better experience probably.

Honestly, i think thats my advice about gaming on linux in general, to generally avoid the native version. Personally, I’ve only run into two games that the native version wasnt shit, and that was Stardew Valley and Rimworld.