Packaging runs out of memory

I have had no issues packaging this project up until 2 days ago. Now It crashes every time and says critical error - Ran out of memory allocating xxx bytes. I have tried deleting out parts of the model and migrating what is left to a new project, but it just always crashes on packaging. I cannot figure out what in the project is causing the crash. I have 64 gigs of RAM, and when I watch the task manager while packaging it doesn’t even get above half of its use. Is there any info I can get out of the log that can help pinpoint what the issue is? If I uncheck Create Compressed Cooked Packages it works, but I end up with a massive packaged file.