For the past several months I have been having an issue where the fps will drop by about 15-25 fps. I have checked the task manager to see if there is a program running in the background, but I have never seen anything out of the ordinary, and the cpu is always at a low level of usage. The only way I have managed to stop the problem is by restarting my computer, but the issue keeps popping up. BTW it does seem to happen when something demanding happens in a game or when I change the settings in a game, but I'm not positive. If anyone knows what the problem could be and how to fix it please help.