multichannel (legacy DD/DTS) processing occurs only if the source has been configured correctly in the Windows App with the source input configured as MD1 or MD2 (not last valid!) (or using the 861v6/861v8 SL multichannel input). The 6 "blue wires" have to plugged into the correct inputs otherwise the processor won't be able to decode the inputs.

This is all part of the fun and learning curve.

Primary: 818v3+ID41, M6 stereo pair, M SpeakerLink cabling, Sonos+96kHz Cullen, silver DSW
HT: Marantz prepro, 271, DSP3300, 8K SE FL/FR pair, DSP M6x2, DSP320x4 (ceiling), black DSW, 520 RL/RR rear in-walls
Living Room: G65, 640 L/R in-walls, UHD722, MS600
Vac. Home: G61, HD621, 4xDSP3100, DSP3100HC
MDMS:NUC/ROCK+TrueNAS Core 12.0 ZFS file server