Massive FPS Drop on High Spec Rig ?

[mZLY]

The only problem I've ever had in the past with overclocking is slight graphical/colour distortion if it's set too high (which it isn't right now), never lost frames because of it.

Will try again with stock settings and edit this post, thanks for your input.

Edit...

My system crashed completely when I got to the next part with speech, that must be what's causing it. The first time I was running slow from the get-go because of the intro, the second time it was when I read the letter and just now I crashed completely.

Ever heard anything like this before? :S