My computer is by no means top-of-the-line. In fact, it's a veritable piece of shit. However, I have at least been able to play older games, and newer ones with the graphics settings down. However, unless the game is very old, ten years or more, I am able to get fifteen minutes to half an hour of gameplay before, sudddenly and very rapidly, the framerate drops. It goes from 60 FPS to 5-10 FPS in a second. This only started happening a couple of months ago; everything was fine before then. It's not from a virus, I've checked several times, and it's not an issue of having little space. Does anyone have any idea what could have suddenly caused my computer to start doing this?