You have to learn to live with the downside of being on a satellite. But it's better than nothing when you are in "rural" communities with no other form of internet.
All pretty much to be expected on any of the Exede Classic Plans or Evolution, with the difference being free zone periods. During the free zones speed should return to normal (although the early parts are slower due to congestion) and data should not count.
Perhaps you should check to see if the Liberty Plans are available in your area - they purport to allow comfortable video streaming at slower speeds once exceeding your limit.