I've been trying to get DI2 running on my system, but it displays the error message "DX12 is not supported on your system. Try running without the -dx12 or -d3d12 command line argument.“ Adding -dx11 to the command line makes no difference.

OS is Tumbleweed. I've tried wine 8.12, various Proton GEs and also Proton Experimental. I have the latest dxvk and vkd3d packages installed. My GPU is a 1660Ti with the latest drivers and so I'm a little stuck on what is going wrong!

As I understand it, DI2 only supports dx12. Can anyone suggest a solution for this issue?