Hi, Today I did some testing in a bigger field with my new P4. When I playback the video it is all stuttery. My pc is fast enough, it plays back my GH4 4K video without problem. Also, the SD card is the fastest card there is which I used for the gopro. Different shutter speeds are not the problem. Tried both MP4 and MOV at 25 and 30 fps. I did some testing yesterday and it played back all fine (which was at dawn), thats why I think it's strange. Also, the live preview seems more laggy than it was yesterday. (Used an Ipad air for HD preview). Anyone knows what happened? Cheers!