I am on the Beta DVR, latest version on the Shield TV.
Today I noticed on two recordings that I am getting audio drop outs every now and then. I noticed first earlier today while watching a recording of The Flash from Tuesday night.
Right now we are watching a recording of Supernatural and I am hearing occasional audio drop outs again. Seems to happen every 10 minutes or so. On tonight's recording it seems less dramatic than it did on the recording of The Flash.
I am playing the recording of Supernatural on my Pro Shield in the Living room. I watched The Flash on my 2015 Shield (16GB version) and it was doing it there too, so am suspecting maybe it's a DVR issue rather than an App issue.