I'm not sure about background processes, because I turn unnecessary programmes off before going on a game. I do not currently have an anti-virus programme, no updates were going on (And if they were the updates would probably have caused continuous lag until they were done) and there are no...
I'm guessing such a problem would fall under graphics cards...
Whenever I'm playing games, or watching a particularly high quality video, I will occasionally experience huge drops in frame rate. For example, I play STALKER: Clear Sky on lowest settings and get a 70-80 frame rate, but every...