Like the title said, everytime when I enter a crowded cell ( sleeping giant inn for example, or any other places which is filled with NPCs ), my game has a chance to have a weird black box shows up and block my screen. People said that this is a graphic problem. I don't have any ENB installed, and I don't know how to fix it. if anyone had the same problem before, please help me, this problem has been bothering me for a really long time.