I called Denon today regarding this issue. They told me to change the audio soundtrack to Dolby True HD via the "movie" button on the remote. I did so and nothing changed. My case has apparently been escalated, and I'm awaiting their reply....
FWIW I have a BDP-83 player.
Send a E to Oppo , see what they say. I am sure it will be what they told me. Its the truehd ,it just overwhelms the processor at some points.May also be a laser that is losing its Mojo.
Finally found the reason, its called seamless branching.
http://www.bigpicturebigsound.com/Existing-Blu-ray-Player-Dolby-Atmos-and-DTS-X.shtml If you dont use atmos or dts x you could set the player to PCM
