Panasonic GH5 10-bit videos

Hello guys !

I own a Panasonic GH5 , i got an issue with 10-bit videos , its not working in my laptop ( 13inch macbook pro retina - late 2013 ) , so i took my external HDD to apple store to try the same videos in new iMac Pro, but got the same result , tried to put the video in FCPX , it worked but it wasn't a smooth video.

could you please advise me on this ?