GTX 1080 Ti with latest driver not utilised in Blender + ProRender. Only CPU are usable and the GPU option seems to be greyed out. I've already make sure that the driver is the latest.
Alienware Laptop 17" R3
32 GB ram
GTX 1080 Ti (External GPU with Graphic Amplifier)
Can you open up the system console (Window -> Toggle System Console in blender menu) and print that out here. It would be good to know what that reports the GPU as? We don't officially support eGPUs from non-amd. But if it shows up as a normal GTX1080Ti it should work.