A:AnswerOnly thing I can think of is to not just exit the settings and go back to watching TV. I found that if I always hit the option to go back to the main screen and then hit the menu button to go watch TV. That way you are ensured it saves.
A:AnswerI believe all 3 HDMI ports should be able to do 1080p. Maybe what your viewing on ports 2 and 3 isn't capable of 1080. Try moving them around and see if you get different results.