This is actually very much possible, and will not cause much of a performance degradation (if any). You can easily directly expose the underlying hardware to a

This is actually very much possible, and will not cause much of a performance degradation (if any). You can easily directly expose the underlying hardware to a container, and it is in fact very much possible to run games from a container. And I say this as someone who ran games on NixOS inside an Ubuntu container as a workaround (because nix is pretty weird when it comes to dynamic linking).