OK, some of you are going to call me crazy, but I am not.
I started a transfer of video from PyTiVo to my Premiere and returned to the HDUI menu screen. The entire screen started "quivering" or shaking up and down by a pixel, repeatedly. At first, I thought there was something wrong with my eyes. So after a moment, I got up and looked a few inches away from the 54" screen... yep.... quivering!
So I picked some HD program to watch and that was having ever so slight pauses in it. Then I returned to the HDUI menu screen and it was still quivering! Tried another video- same thing, then back to the menu, same thing. The second the network transfer of video was complete, the screen stopped quivering and was normal again.
I have not seen a posting on this phenomenon before. Has anyone else seen this behavior before? And if so, in which versions? I am new to using the HDUI, and I think this is the first time I have looked at the HDUI menu screen while doing a network transfer. I know it never did this in the SDUI.
(And no, there is nothing wrong with my HDMI-connected, Vizio LCD TV)