Originally Posted by Kei Clark
I believe that ground issues in equipment can also inject imperfections into the signal path of copper cable that can manifest as artifacts. Could be a factor in what the viewer sees when comparing cables.
Kei, But those artifacts should manifest themselves as a large imperfections not as subtle changes in color or contrast which require uniform changes in multiple pixels. In other words, any ground issue would result in random changes not coherent changes to only the low order bits.
BTW, thanks for the help you've provided on the various HDMI questions. It is always good to have another person who understands HDMI help out.