I'm coming from an Oppo BDP-83. Never had audio dropouts bitstreaming to my Denon AVR-3808CI. Repo Men rental had 20 dropouts. I purchased Iron Man 2 single disc edition. This definitly sounds like firmware related issues. As other posters said, they are not repeatable in same scene.
Called Panasonic and received a case number but nothing else. Customer service leaves alot to be desired. I just updated the firmware on my Denon 3808CI and changed HDMI cables. We'll see. Otherwise I might put the my Oppo BDP-83 back in the system and return my BDT-300.
Dolby Atmos/DTS:X 5.2.4
Samsung 65JS8500 (calibrated by Gregg Loewen); Marantz SR6010 + Onkyo M-5010; Oppo UDP-203; Apple TV (4th Gen); PS4; Definitive Technology BP-8060ST, CS-8060HD, SR-8040BP, Pro-Monitor 800; SVS PC-12NSD (2)