OK I got everything setup.

Interesting approach that avoids unnecessary devices in the chain (aka a separate streaming device).

I tuned off post processing and set the voicing to music.

Initial take, atmos remixes sound great, noticeable difference. Everything else compared to uncompressed 44.1/16, I don't hear a difference.

One thing, the gain on the atmos material, is way lower, even when I go to 0dB it is not super loud.

861v6, Oppo83 (3xSpdif Mod), Wiim Ultra running Squeezelite, Tivo Edge, Apple TV v4 with Key Digtial Audio Extractor, Von Schweikert fronts and center, Triad in ceiling sides and rears, Aerial SW12, Orchard Audio Starkrimson 3 channel and Sunfire Cinema Grand amps