I've got a problem where my lopping animations have a sever pop in them when played back in a Matinee. The animations themselves actually loop seamlessly, and you can tell during previews and in regular gameplay, but they ONLY pop when played back in matinee. The problem manifested itself when I made a change to the animations, switching them to rotation (with some bones set to translate as well). Before this the animations were not-rotation only. I don't know why that change would cause a problem during matinees and NOT the rest of the time.