Did a latency check with testmy.com.
First was to Dallas. That came in from 900ms to a whopping 6663ms! https://testmy.net/latency?tID=ote22wkbwe
Second test was to Amazon. That came in from 626ms to 741ms. https://testmy.net/latency?tID=f7pkodp9j1
What a difference.
So it doesn't seem to be a gateway issue or a data shaping issue. Someone (Centurylink!) is blocking HughesNet. Okay, blocking is probably not the right word. But CL may be traffic shaping for those who pay them for priority.
At least that is my guess.