I run all my games in a virtual machine (Linux KVM with GPU passthrough). In my case, the gaming VM is shared by all windows games, but with some extra effort

I run all my games in a virtual machine (Linux KVM with GPU passthrough). In my case, the gaming VM is shared by all windows games, but with some extra effort it is possible to isolate each game in a separate VM. (What comes to mind is using qemu qcow2 format for the base windows image, plus a snapshot file for each game installation)