6gigs of Ram, PNY gtx 960, i5 2400 @ 3.1 GHZ, 1tb memory. GTA 5 is the only game that this happens to. Before GTA 5 is open my disk is fine, it says %0 but as soon as I run GTA it skyrockets up to %100 this is the only game that does this. Even the Witcher 2 doesn't even come close to %100.