I use WASD for camera panning and noticed today that its VERY sluggish. It used to be immediate but now there's a delay, then it starts moving, and when I let the key go, it slows down but continues to pan to whatever direction - eventually stopping after about 5 seconds.

What's up with this? I checked the options and didn't notice any way to change it. Seems very annoying and it happens if I use panning at the edge of the screen with the mouse as well.