Hi Nick, Last time we spoke, you mentioned that i should untick the GPU option in preferences and that has made the videos play well. However i ticked it again today just to see, lo & behold those particular videos started freezing again. I'm just trying to troubleshoot as they are mostly videos i encoded myself with FCPX and Handbrake. Could it be the frame rate? Can ME handle videos with > 30fps (greater than 30 frames per sec)