I don't know why but it suddenly got super slow, 1 day to download 7gb to give you and idea. I have a family plan.
I've already checked my internet connection and it's fine; I've already tried to download the same files from Google drive and it works fine there; I've already checked the dropbox broadband and it's not restricted and also I've already tried to uninstall and reinstall.
When I tried to upload something it works with no issue, so the problem is related only to download.
I'm a Mac user.
I don't really know where the problem could be !