New HD Box not good - XFinity

Got a message that I needed to update my old HD cable box to the new upgraded ones.Hooked it up and I have to say the picture was much better with the old box.Yes I am on the HD channels and all settings are correct.Am I missing something here? This new box has a worse picture.

This question, "New HD Box not good," is about XFinity-Comcast TV television equipment.

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