That was a problem with those first mediatec chipsets. I remember reading about dropouts with the S790, also. Can't remember how many I had. My Oppo 93 has audio dropouts, also, on certain discs that over utilize seamless branching (i.e. Disney). I remember watching Monsters U on both the 93 and the 330. Both had the dropouts. The Panasonic x20 series and earlier that utilize the uniphier chipset do not suffer from the dropouts.
Please use the report post button to alert staff to problematic posts. Never quote or respond to them yourself.
Oppo UDP-203 -> Yamaha CX-A5100 -> Sony XBR-75X940C; Mediabridge 6' and 15' HDMI cables.