Download times randomly taking days

[MuscularBaby]

When I first used this app, it seemed to work just fine after transferring 2 games but then every game after that has had a decent speed and then when it gets near the end, I randomly get an ETA of 40k days and my PS4 says it can't install the game. The decent speed thing I mentioned a second ago has suddenly gotten slower too. it went from 1-2 minutes to 5-6 minutes for files of roughly the same size.

Edit: I should mention that the method I was using was through ethernet