Hello, Maybe you all can answer this question. What is the recommended settings for an HR21-700 DirecTV receiver, if you have a 1080P Tv? Currently, I am using Native On and Stretch mode and I have all 480i, 480P, 720P, 1080i selected on the receiver. Sometimes I get HDMI handshake issues switching from an HD channel to a Non-HD channel ( and vice versa) , where the screen turns all snowy and purple. In order to fix this, I just pull the HDMI cable from the TV for a sec and replace it and then the issue goes away. I have this feeling that the signal is being double processed somehow and maybe that is why I am getting this issue. I have an HP 5080 1080P Tv. Any help would be appreciated. Thanks.