I will log a support case.
However, I want to report a GOOD experiment (not with Resolve). Aren’t you glad I have BOTH HItfilm Pro 13 and Davinci Resolve (although my goal this year is to move entirely to Resolve).
I’m happy to report that with Mocha Pro OFX/Hitfilm Pro 2013 EVERYTHING works as it should. Mocha Pro renders BACK to timeline in a few seconds, AND additionally there is NO crash if I export to .MOV file.
I think you’ve got a LOT of work to do with BlackMagic, or it just has a lot of issues itself. These DR 16.1 betas may just have lots of general issues…but the point of getting myself involved WITH a beta was to help you both out with these issues do I can have clear sailing ahead before 16.1 is out.
Attached find screenshot BACK to Hitfilm Pro showing timeline render.