
I'm having the same problem with Blackmagic CinemaDNG files. Sometimes it happens quickly (after only 3000 frames), sometimes it happens less quickly (after 18000 frames), but I've got a concert video that's about 60000 frames. Breaking that up into 20 different 3000 frame segments that I can reassemble later sounds like a crappy work-around.
My system is an early 2011 MacBook Pro with an AMD Radeon 4850 graphics card. I am also running the latest Resolve (released version 10) and Mavericks.