https://bugs.winehq.org/show_bug.cgi?id=43479
--- Comment #3 from Fabian Maurer dark.shadow4@web.de --- Can you provide and apitrace for the DX11 calls? Just download the windows version from http://apitrace.github.io/#download and run it with "wine PathToApitraceExe trace -a dxgi PathToExe" while steam is running.