Boot Camp Assistant Says Not Enough Space When There is Plenty of Space

I have over 80 GBs of space left on my SSD, but boot camp assistant keeps saying I don't have enough and that I need 42 GBs of space. I even created a blank FAT partition of 50 GBs, just to test it out, and when I rerun Boot Camp Assistant, it wants to remove the "Windows partition," even though it is NOT a windows partition. I'm on a 15" Macbook Pro from 2018, running Catalina 10.15.6.