So I have 3 Quantum clients in my home. On two of them the video keeps changing to 480p and only fitting the 4:3 letterbox size. I go to settings and it says 1080i or 1080p or 720p but it does not matter. The output stays at 480p. So to fix it I have to take out the HDMI from the TV and plug it in to a different input. Then it keeps the settings for a few days but then reverts back to 480p. One is hooked to a new Vizio TV and one is hooked to a new Samsung TV.