Games! Or more specifically, game - with dxvk I've been happily playing through my GoG DRM-free copy of Cyberpunk2077 and combined with Steam+Proton for other games I have no need of my Windows partition anymore. I'm planning on removing it entirely when I have a free afternoon to redo my partition table (I use NixOS too, so if I save my userdata I can rebuild the whole system easily).