What low priority does is only slow you down during congestion. So if you’re using your tower at like four in the morning when practically everybody’s asleep, there’s going to be no congestion and so your speeds would still be perfectly fast. However, at six o’clock PM, there’s more people on the tower so you would get less speed at that time. It’s not a hard throttle to a certain speed or a data cap that just shuts you off completely.