Hello,
I have really annoying problem with FC4 running on my Radeon HD 8750M. It's about these weird rectangles appear in random spots, mostly in towns and around the buildings (you can see that on this video, the same thing happens in FC4:
https://www.youtube.com/watch?v=epdBAWdq5ac) Exactly the same problem occuerred in Far Cry 3 on mobility Radeons, and all you had to do was switching DirectX 11 to DirextX 9, and problem was gone. But you can't do this in Far Cry 4. Also changing the D3D11 "1" to "0" did not help. Does anyone have a clue on how to fix this or just nothing can be done?