MC 8.9.1

OS X EL Cap

3.3 GHz intel core 5i

8gb 1816 MHz DDR3

I have seen lots of posts about Pipe stall, but non-pertaining to my issue.

I have 5d footage that is AMA linked, and now through consolidate/transcode I am trying to transcode to  DNxHR LB.

My smaller clips, like under a minute, will transcode. Anything more than that results in the error. 

Ive tried DLing programs to adj the nice to give avid more and less processor.

Ive tried usb 2 to connect my drive.

Ive tried moving files to the internal drive.

Any ideas?