Hi Sanjay,

Have you tried outputting non-decoded from the Oppo?
Your info above suggests you are wanting the G68 to downmix BUT giving it LPCM to process in order to achieve that.

I wonder if giving it native DD/DTS will make any difference. Maybe decoding and downmixing are best handled together?

Are you playing DVD or Bluray source ? This may impact the above.

Just ideas but worth testing in your config.

Cheers

Rgds,
Nick