Just install LightRoom on my new Surface Book. I have the i7 processor with the NVIDIA GPU and 16GB memory. When connected to the GPU and keyboard, everything seems to work correctly. When I undock from the GPU/Keyboard (as a tablet) the SB uses the built-in graphics processor. When in this mode, the photo is no longer rendered in Loupe view. When I select before/after, I get the before image, but the after is not rendered. Has anyone else seen this? Any hints how to make it work?