Currently my two tested clients are Origin and the Blizzard Launcher.
Origin Crashes at start, throws no error. The blizzard launcher prints “wine: Call from 0x7bc77779 to unimplemented function vulkan-1.dll.vkGetInstanceProcAddr, aborting” in the terminal and crashes.
Both start without problems if i deactivate DXVK.
Thanks for leaving the solution in. I remember having a broken libvulkan installation as well, once. It was due to the fact that libvulkan1 was in version, say, 2.1 while libvulkan1:i386 was in 2.0 because my repository couldn’t finish the build job.
So I did like sudo apt install libvulkan1=2.0 libvulkan1:i386=2.0 (of course version numbers are not the actual ones)