Ill start by saying that I've known this issue for a long time and decided to instead use motion trails as an artificial motion blur. It of course is not the same though. So now I really want to get to the bottom of this. Why is it that when I apply motion blur to my edits that they end up at random times jittering? It happens with text slowly getting larger or even not moving at all. I feel like whatever detects the movement gets confused or something and causes random spikes in movement. Its not entirely crucial but it would be nice to have.