The HDMI connection with the receiver will drop out for a fraction of a second. The audio doesn't play briefly and the display of the receiver flickers briefly indicating that the HDMI audio connection dropped/changed briefly. This happens maybe every 10 minutes or so, apparently randomly.
This seems to occur when a new software revision comes out. It was completely problem free except for versions v7.5.1 and now with v9.0. Can this be addressed (again)?