I have the HR-21 DVR paired with the samsung LN52A850 and the picture was constantly jumping around using HDMI (I thought it was the AMP function on the Samsung), then I changed to component video and it eliminated the studder. Although, it didnt eliminate it until I powered down my entire system and restarted my HR-21. Now the picture is smooth like it was with my HR-20.
I contacted DirecTV tech support and the lady I talked to said this was a known issue in the past and that she thought it had been fixed. Anyone else having the studder issue?