The only good working solution I found (other than PCIe passthrough or specialized GPU virtualization) is VMware stuff (with better success on Windows [as a host]), because their DirectX virtualization is top-notch. Years ago I did some random testing of my Steam library and got close to native performance.
Obviously, it means you can't use DLSS, RT, or any other GPU-specific features, but their DirectX virtualization supports up to DX12.
Obviously, it means you can't use DLSS, RT, or any other GPU-specific features, but their DirectX virtualization supports up to DX12.