In any game that uses 2-dimensional rendering, (not necessarily a 2d-based game), I find that there is a consistent stutter consistently happening approximately twice a second. Sometimes the stutter slows down the animation for a frame, and sometimes it jumps ahead a frame. Because of the forward-jumping, I suspect it is not a problem with my GPU being overloaded, but might have something to do with over/underclocking.
GPU: GeForce GTX 950
CPU: AMD FX(tm)-6300 Six-Core Processor 3.50 GHz
Installed RAM: 16GB
Monitor: 60Hz 1920x1080p