tmobile home internet speed issues

I got this service for my son to use in college. We were told his apartment is 1000 feet from a tower. The gate way is almost full bars and get a n41 and maybe a b66. Initially, we had trouble connecting. We were told the tower was undergoing maintenance. We can connect after a few days, but the speed is junk. It bounces around so much that his roommate said she can't even stream an old lecture. This service is totally inconsistent. Restarting did not help. His roommates are speaking of going back to Comcast. I was pretty excited about the prospects when I saw how close the tower is, but that is no guarantee of good service.