Footage jumps in Final Cut X and Quicktime during playback

Question

I did a simple SLOW pan shot with my Canon C100 with the media being recorded on to the Ninja 2. I transfer the media from the Ninja 2 on to an External Thunderbolt Hard Drive. When I play back the footage it jumps around. I also tried the clip in the Apple store and got the same result.
When I play the clip on my friends PC it plays smoothly.
I'm shooting Pro Res 422, 10 Bit rate, using a Mac Book Pro, OS 10.9.5,  Final Cut X 10.1.3 and I have 16 gigs of ram.
Why is the footage jumpy?

Answer 1

Greetings Vibrant
I was thinking that your problem may lay in the SD card being not quick enough to capture the camera's 10 bit HD vision and was dropping frames etc but, you mentioned you are recoding onto an external Ninja 2 so surely that must be quick enough to record the output of the camera you would think.
I'm tending to think that your MacBook Pro, in particular it's graphics card, is not up to the task of playing back 10 bit full HD content.
Your best bet to decipher if it's the Ninja 2 thats the problem (dropping frames during capture) or the MacBook Pro during playback would be to export/convert the vision into H.264 or something smaller in size and bitrate and then play that back on the MacBook, another Mac, iPad, iPhone etc. If it's smooth, then the MacBook would be the problem. If it's still jumpy, then the problem could lay with the output to the Ninja, or the Ninja itself.
Have you tried playing back the vision from in-camera/Ninja connected directly to a HD TV ??
I've been having a **** of time these past few weeks with my newly acquired Blackmagic Pocket Cinema Camera with jumpy vision. Tried all of the above, sending the vision in it's native form and also numerous varying conversions, from my 27" Quad-Core iMac to my MacBook Pro, iPad Air, iPhone 5, to my TiVo's and even last night burnt onto a DVD to playback in my Blu-Ray player in the theatre room. All to no avail. I've purchased a second expensive SanDisk Extreme Pro 95MB/s card thinking the first card was a fake or something, and the new card has made no difference either.
I even completely formatted and clean installed OSx Mavericks on my MacBook Pro just to double check, but it's still choppy.
The vision even plays back choppy in the BMPCC through HDMI to a HD television but not as bad to be honest, so i'm now, after all this testing, consigned to think the camera is kaput, as the vision looks more like a huge vertical sync problem on my camera, as opposed to simple dropped frames as this camera is prone to with not so good/unsupported SD cards.
Hope that helps you a little in running tests to find where the problem lies with your vision.
P.S. I read recently during my last two weeks of wasting far too much time troubleshooting my own problem that it's best to NOT have journaling enabled on your external disk(s) that you use to capture and edit with in FCPX. Apparently Journaling slows down the read/write of the drive potentially causing stuttering to high bit-rate HD video. I'm about to disable journaling on my FCPX disk and test the outcome shortly.
Although, you are running Thunderbolt disk so you wouldn't think such a fast medium would be affected by such a thing. But, stranger things have happened   .
Regards
Paul