Hi, I have a MB Pro 13" Early 2011 2.3 GHZ i5 with 16gb mem and 256GB Samsung 830 SSD and a secondary 120GB replacement drive on the DVD dock. I was testing Panasonic GH4 4k video (MOV file) on Final Cut 10.1.1 and even though the one file was the only one on the timeline the video stuttered on playback. Is the MBPro too old? Or is there a way to have the 4k video play without stuttering? I heard on Adobe Premier you can lower the size of the 4k video in the window and it plays back properly. Thanks.