I'm not sure what I did, but panning and rotating in the world view (moving around) is now INCREDIBLY slow.
Use to I could fly around easily panning, spinning the viewport. But I must have fat fingered something because now it's incredibly fine grained. Any idea what I might have done?
What happened is your relative movement (relative to the 'focused' object) is off from your view port. The easiest way to fix this is to select an object and hit the delete key on your number pad to focus the view port on that object.