Are you using the 4.0 drivers? <search this thread, @Andykong posted them. not sure if they made it to Cayin's site>. Supposedly they fix some Win 10 issues. I have a completely different problem, but since yours doesn't occur on the Mac, I'd guess it has to be a driver problem
Thanks for the suggestion, though I just figured out what the problem was (I’m going to get the 4.0 drivers now that you mentioned it, though).
As it turns out, the cable I got was faulty. I managed to find another type c cable, and had absolutely no issues with that, in both file transfer and DAC modes.
I have never had this sort of thing happen because of a cable (it’s even digital!) so this was an interesting experience for sure.