Just got a multiroom dvr. When watching a program recorded on my dvr using my new QIP 7100 2 box, every now and then a small portion of the video gets pixelated for a second then the video returns to normal. I also have a QIP 7100 1 box. The QIP 7100 1 box does not have this problem. I tried switching HDMI cables. No help. The QIP 7100 2 displays the TV signal perfectly. Only have this problem during dvr playback. Do I have a defective box? If not, why does the 7100 1 play recorded programs without the intermittent pixelation?