Nowadays, every time i play i pc game it works exactly fine and after exactly each 2 minutes 3 seconds i get a massive FPS drop where i get only 1-6FPS.This happens for a little bit time and gets ok after 1-2 minutes.Why is it like this?My computer is also extremely slow nowadays.It needed 4hours for me to install a windows while my firend's computer needs only 5 minutes.My processor is 2.60Ghz and his one is 1.5.Is it because of ny old HDD?I always defragment my drives, run disk cleanup and scan for viruses.I am on Windows 8 btw,So why does this happen?I have much better hardware than the recommended specs.