Im going to explain this as simple as I can but its weird..

With the game on Ultra, it runs great, but for some weird reason, everytime you either open the map or go into the main menu, then go back into the game, you can see the shadows which you were seeing before you entered the menu, in a faded form, following your camera around. Not exactly the shadows, think of it more as the outlines, like the outlines of the trees and plants in faded from following your camera around. Imagine it as if you had a camera, yet someone put a piece of plastic with light grey/black outlines over the lens so it would show up no matter where you point the camera. Effect is lessened, but not removed if you look at the sky when you go into the map/main menu.

Specs :

GTX 770 SLI
16 GB 1833Mhz DDR3 RAM
Intel I7 4770K Octa Core @ 3.50Ghz

Game runs from a 3TB HDD.

Apart from this weird bug, everything else seems to be working, so if someone could help me out here ASAP, that would be great.

P.S : This doesn't happen if the game runs on very high, so im guessing its something to do with shadows or SSAO. If you were wondering why I dont just run it on high instead of ultra, well I have 2 770's for a reason...

Thanks in advance,