Redout 2

Got Redout 2 free via Epic Launcher.
I get error message:

DX12 is not supported on your system. Try running without the -dx12 or -d3d12 command line argument.

However, there is nothing in the command line argument. Is there a -dx11 or -d3d11 switch?

This isn’t Epic or Lutris giving you that error, it’s the game engine itself.

To support DX12, you need a reasonably new GPU, updated drivers, to be using a newer version of Proton to run your game and Epic store, and maybe - as was in my case when I upgraded graphics a while back - need to be running a 6.x kernel.