Fix Omarchy Gaming (Vulkan)

After setting up my new notebook, I wanted to try some games on Steam. Works like a charm on my mini PC with Omarchy, but not this time. After starting a game, it takes a few seconds and nothing, the game silently crashes. After fiddling and searching around, Proton logging etc., still no cause in sight. Then I tried Doom 2016 and it worked! But why? Doom starts with an OpenGL renderer, after…