We don't know what your other options are ....Cellular ?, WISP ?, DSL ?
The fact is that due to the limitations imposed by the speed of light (186,000 mps) and the distance to the satellite (22,300 miles per leg) your absolute minimum latency is going to be 580 ms or more.
Realtime games on satellite ?: Impossible.
But doesn't a wireless cinema adapter work differently than having a DTV console itself connected to Hughesnet through a router? It was my understanding, from other posts on here, that the console uses the internet for a bunch of other things, like the guide, updating titles and descriptions, and other things even if you don't watch on demand programs/films.
On my DTV, I am supposed to be able to rewind my shows, but my HughesNet, randomly connects with my DTV, so that option is very seldom something that I can use. Most of the time, when I turn on my DTV, it tells me my wireless internet is not connected....most functions I should have, I do not.