Whilst playing games (CS:GO, PS2, DOTA 2) my GPU usage will occasionally tank from 60-70% down to 3 or 4% for a few seconds, causing a really bad frame rate drop as a result. The fact that it occurs in multiple games leads me to believe it's not to do with the game or engine (the games are all different engines). When I test my GPU under Furmark it seems stable, and when I test my CPU under prime 95 or other similar benchmarks it's stable as well. Any help or should I just RMA my graphics card if possible?