I registered to reply to this. I've got the same problem, but for me it's not just for the edge panning. Using the the wasd keys produces the same problem.
It's so severe that it's unplayable, as the camera has extreme stuttering. It used to be silky smooth prior to either 1.0.78 or 1.0.81.
Made this post about it here:
http://steamcommunity.com/app/230230/discussions/0/630802979224170785/#p110