OK, the main problem seems to be ‘Cannot create DirectX/OpenGL interop’. All the others, such as ‘Couldn’t read Shared Memory’ are not really bugs - just warning & notifications.
Unfortunately, I don’t have any out-of-the-box ideas yet, but I’ll try to reproduce the error tomorrow. The only idea I have atm is that UE4 for some reason uses another GPU (integrated graphics perhaps?)
Reminded me of this post:
Is there any chance you could try on a different computer in the meantime?