It’s coming from FCP, and sent to compressor for the most part.
The only common thread, seems to be they were colored in Di Vinci. But, it’s not all Di Vinci outputs.
Doing h.264 does seem to solve it. But, that takes a fair bit longer then M2vs… And I’m kicking out an average of 450mins of Blu-rays a week.
It’s by far, the weirdest issue I’ve had in years.