Nearly a year later, still happening despite updates. GIF: https://i.imgur.com/k6ypz6f.gifv
It just loops forever at 0%. It has to be aborted, but it doesn't abort either so I have to kill the process.
Will try USB 2.0.
Edit: Nope. Using USB 2.0 isn't a solution.
I also got a new mouse, same Harpoon model, same problem.