Plugin is in development, not fully ready yet.
There’s also the plugin “pause games” that can suspend a game, stopping it from having any CPU/GPU load while you play something else. However it doesn’t free up used memory, and sometimes controls don’t work when multiple games are open, with one game intercepting inputs meant for the other games. So this would be pretty cool if it works out.
Yeah I guess Flatpak could help here. But I always read there can be issues with some games, due to the double isolation from WINE / Proton layer too. I thought about installing Flatpak version instead, but to be honest, it’s not a real issue in my opinion that warrants this (at the moment).
As for the SteamOS fake home folder, interesting method. Is this command active in the Steam game parameters (commandline call)? So that when closing the game then everything is normal. Sounds pretty good to me. For the read only system files, aren’t the system files in SteamOS read only anyway? I’m currently not really concerned with the security in SteamOS / Deck, but its good to know that there are solutions (or helpers) to that.
Edit: Actually using a Proton version is almost doing lot of this already, as the “Windows” games are routed through filesystem to use the WINE directories. It’s still not completely isolated off course, but at least that part is more secure than installing Linux games natively, I think.
Yeah SteamOS is read only anyways, so you could skip the systems part of the bwrap command when using it on steamOS.
As for games inside proton, they have full access to your files mounted as a Z: drive iirc. So it’s possible for them to mess with your files, if the dev prepares for it.
Ah right, forgot about that Z: drive. I actually just loaded stuff from the Z: drive (Wave Race 64 PC recomp, but using GE Proton) before making that reply, so my brain was shut off I guess.