Hi
most of the times I connect my laptop to a big Full HD LED because my Laptop is HD. after doing this Windows 8 Automatically detect the correct resolution(FHD) and change to it.
and like always I did it and started to play Amnesia and this is the result:
I changed resolution to 1366*768 (my laptop screen resolution) and it corrected but any resolution more than that cause the same result as the screenshot!
I do it always for any games and play in Full HD resolution and never had such problem!
Windows 8.1 RTM
CPU : Core i7 (ivy bridge)
GPU : Nvidia Geforce 660m
Ram 8GB