So I have this problem now for a very long time (around 2 years) and I can't figure out why this happens (I changed all kinds of graphical settings already, uninstalled the game formated the PC and even changed my graphics card). The problem is that this special setting that shows these underwater light refelctions only in a weird "square" like on this screenshot:
http://www.bilder-upload.eu/show.php...1446045422.jpg
Sure, it's nothing gamebreaking but still, it looks not very nice.
My graphics card is a Radeon R9 280X, I asked in the global char about this already but some people who have this card don't have the same problem.