Hello, I have a large scene rendering with Redshift, but the renders are taking forever because its trying to extract every single alembic?

The alembics are coming from Blender and Maya, and Mantra handles them correctly (takes maybe 30 seconds to initialize the scene). Redshift though takes over 25 minutes to generate the scene before even rendering?!

I tried everything I could find online, but all the info is old. Also the OBJ level "instance packed prims" option just renders black.