That and the C++ error-despite-installed of Unreal Engine.
Ah btw, some notes i've made years ago (could be out of date already):
CHOOSING A API:
- tools, simple games <= DirectX 11: default wined3d (OpenGL)
- 3D games <= DirectX 11: use 'dxvk'
- old games, 32bit: might have issues with dxvk (too large address space)
- might work better with
winetricks render=vulkan
- modern games = DirectX 12: default vkd3d
- might work better with 'vkd3d-proton'