Default [Q] CRT Animation

Well this seems like an odd problem I'm having. The CRT animation that is displayed when you turn off the screen is sort of broken. What do I mean? It seems a lot less fluid. I'm running Cataclysm and I can confirm that CRT is definitely on, but the animation is either skipping a lot of frames or incredibly sped up for some reason. Any possible reasons or solutions?

Thanks in advanced.