I didnt use it often, as I had other methods for watching, but I did it just to do it. It definitely was not 480p or 30fps, not on mine.
Not surprised that not everyone had the same experience however, being that the app was not supported, although I am not sure exactly what would cause the difference.
Maybe it worked better on certain FireTV devices?

. Now after looking at the numbers like I suggested, it's cheaper (as I thought) to go with YTTV and drop Dish, so that is what happened this afternoon.