If your project is close to due, I’d find an alternative to those plugins if I were you. I wonder if you only went Prores instead of ProresHQ if that would eliminate the problem. HQ obviously takes up more resources. Why don’t you do this – take a sequence that can cause the problem, use media manager to create and recompress the short sequence to standard ProRes in a brand new project, then close the HQ project and try to make it crash with the non-HQ footage.
If you find that HQ footage is causing your problem, recompress all the DSLR footage to standard prores. As was mentioned before, ProResHQ converted dslr footage does nothing but reduce resources and use more disk space on your system.
It’s possible what solved my issue was fixed in OS updates.
And it’s sunday on a long weekend, so I’m not using my own system resources to ensure proper capitalization and spelling!
Good luck!