I recently subscribed to the shaw cable service. I've noticed that in general the quality of channels marked as HD is not very good. In short it's as if they're running in 540p or even 480p. (Some SD channels even appear in letterbox format with large black borders, but I'm not interested in those).
As an example, using the same TV settings, viewing the WWE network through internet streaming is quite better than through the cable. Bein sports and Sportsnet world are just as inadequate. Overall, 1080p Netflix looks better than any of the channels that I've tried on the cable.
I've already set the box to use 1080p, and tried using a different HDMI cable. Any help would be appreciated.