Well, you'll never have enough data to stream that much, UHD is even worse than HD. Satellite internet is not meant for that kind of streaming, even cable companies are starting to clamp down on customers who stream that much.
If you able to do that much HD and UHD then there is some serious video compression going on that I'm not aware of.
Are you in your first month of service with HughesNet?
Should also give this a look:
http://www.hughesnet.com/learn-more/how-to/improve-video-performance