It has nothing to do with your internet speed, their servers go at a limited speed unless you get a membership premium, if you want a better dl speed Terminal, Gofile ( but they are not used here) or Mega are the best choices, since Nopy doesn't exist anymore.
The problem with Mega is the limit of 5Gb per day, but you can bypass it using a VPN and switching your IP once you reach that limit, or use Megabasterd ( I prefer this second solution, it work very good), or else look for a torrent, I don't remember the page in the thread where it was posted but you can try to get it with the advanced search.