Did you get any further with this - I have several titles playing from a DV700 to an Alto and getting multiple audio drop-outs, throughout disc playback (Game of Thrones - Atmos version)? No Datasat in the equation (Pioneer SC-LX89), but do have a Lumagen Radiance Pro in the chain.
Just curious, as I'm about to contact Kscape and raise a support ticket.
Just FYI, I also have a Lumagen Pro and ran the output of my Alto directly into my McIntosh MX160 (and then out to the Pro - then to my display) just to make sure the Pro wasn't doing something (Jim at Lumagen also checked Dolby Atmos with no issues and I have no issues from other sources including a Strato running Dolby Atmos into the Pro). Still had drop-outs from my Alto running first into my MX160, but only for full TrueHD or TrueHD/Atmos soundtracks. Doesn't seem to be an issue for DTS soundtracks. I've stated this in a few threads, but all I have to do is watch Star Trek Beyond from an Alto/DV700 in full Dolby Atmos (no post processing - but full Dolby Atmos). For my setup, pretty much guaranteed drop-outs within the first couple of chapters of the movie. SJ