Guild Wars 2

Hello, recently I have been getting random black screens in game, after about 10 minutes of playing will randomly go black while I’m doing something, the game cursor is still there but I just cannot do anything. Please help, it is extremely irritating, especially when I’m commanding in WvW and it disconnects me leaving everyone following me clueless as to where I have gone…

Also, I don’t receive any crash reports or anything it just goes black, doesn’t freeze my computer or anything, I can window and close it, which is what I have to do to end up closing it.