About a month ago I started having an issue with my computer. When I play games in fullscreen they run fine for about an hour, then minimize all on their own. I can return to the game by clicking on them in the taskbar but about a minute after going back to it the game minimizes again. Once I maximize it for the second time it stays up for around an hour before this process repeats itself. The only solution I've found so far has been to play games in borderless fullscreen, but this is not ideal. I'm using Windows 10 in case that has any bearing.