Its highly dependent on implementation.

https://www.pugetsystems.com/labs/articles/stable-diffusion-performance-professional-gpus/

The experience on Linux is good (use docker otherwise python is dependency hell) but the basic torch based implementations (automatic, comfy) have bad performance. I have not managed to get shark to run on linux, the project is very windows focused and has no documentation for setup besides “run the installer”.

Basically all of the vram trickery in torch is dependent on xformers, which is low-level cuda code and therefore does not work on amd. And has a running project to port it, but it’s currently to incomplete to work.

I use wine-tkg (https://github.com/Frogging-Family/wine-tkg-git)

Had no Problems with that in FF14, Remnant 2, Satisfactory, Supermarket Together and Subnautica Below Zero. Tested them all under Sway, not sure how much that influences these results.

From my experience using it: Mostly steam overlay and clipboard copy/paste not working. The rest seems fine.

Most of the stuff on GoG should fit the bill. You still can use it as a website to shop for a game and get a installer exe for it. Without any additional launcher.

As far as documented network go, I’ve never seen more than games listing a couple of ports for servers, never anything like ips or actual network protocol descriptions. I guess anything with user hostable dedicated servers should be fine.

Problem is that those old games have very low online population, so I’m not entirely sure how much “casual comraderie” you’ll find.

Still a bit irritated by defining VR as a platform on the same level as Linux or Windows, but whatever.