I am trying to make an interview clip appear old, worn out, dirty, burned and damaged. I am using the ROUGHEN EDGES effect to achieve this goal. I also have a few other layers on top to aid in this appearance (LIGHT LEAKS, OLD FILM GRAIN). The effect looks great, however, the movement of the roughen edges effect around the perimeter and across the surface is disturbing because of the incredible speed all the dirt and filth moves. I would like to slow it down so it gracefully and subtly moves just a bit. Is there anything to do to the settings to slow down the movement without slowing down the entire clip? The effect is part of the original layer, so slowing the whole thing down will not satisfy my goal. Attached are photos of the clip including a detail shot and the settings in the effects control window.