I just got my phantom 4, everything worked perfectly! When I tried to download a 1 minute test vid into my mac-pro, the result was disappointing, choppy playback! The vid would start and stop the entire time. Is it that I am not computer savvy. The connection was from the phantom into the usb of the computer. The computer is about 7 years old, could it be outdated for the vid file size or something else? Any advice is appreciated.