Known issue with Direct Tv
Direct TV has a known software issue with sound dropouts on HD channels when run through an A/V receiver and HDMI cable. This has been an issue since 2009 at least, so it does not seem to be a priority for them. This problem exists in carrying the HD signal through the HDMI cable. I therefore suspect that some picture issues are a result of the software comparability with the HDMI connection. I suggest that everyone who has this issue complain to Direct TV. Their fix for this is to use a lossy connection from the receiver to the A/V receiver or hook it directly to the television and use the television speakers.This fix is not acceptable to all of us who have paid for 5.1 sound systems or even good speakers which are hooked to the A/V receiver.