A:Answer I actually got it resolved. It turns out even the HDMI cables supplied with the bar are not adequate. I purchased some 48 gbps HDMI 2.1 cables from Amazon, and, after I hooked up the bar using those, everything has been working fine now. No more audio drops, DV titles on Netflix and D+ all play perfectly. Not sure why this made a difference, as the cables work on my other 5.1.2 system with my Yamaha RX-A1080. Those same cables do not work with the soundbar however.
My guess is it's something to do with the HDCP handshake on your G700. Either way, it's working now.