AJA 4K IO & FCPX Issue!

For 4K 50p, you can't playback at better quality setting without frame dropping after you rendered the timeline at prores422 at 12-core 64gram 2*D700 mac pro.

FCPX version is 10.1.4, the aja driver is the latest, we use 4 3G-SDI out to Sony BVM-300.

When playing the rendered part, the cpu usage becomes very high!
It's an old problem for at least 1.5 years, but still not solved yet.

You can't use better performance setting because it will cause the image blur.
What you can do is to ignore the frame dropping when playback. But the video seems un-continous.

And when editing, you must bear this issue, after outputing to a prores422 movie,
then import it back to the timeline for review.

You said it ran just fine with the older driver. Maybe you should not have updated the driver?

www.fcp.co/forum/4-final-cut-pro-x-fcpx/...a-io-4k-12-1-drivers

- Ronny