Remind me again, you need the upgraded 4K streaming plan to get ATMOS from Netflix, right? What about HEVC/H265? Because I get just plain E-AC-3 (DD+) 6 channel for AKA, The Night Agent and The Recruit Season 1
KidJoe
Ya you need the Premium Plan for Spatial Audio (Atmos), which i have. H265 HDR/Dolby Vision also but H265 SDR you can get with the Standard Plan
@jpp72 I notice AKA for you is AVC/H264 codec, I've not seen E-AC-3 JOC (DD+ w/Atmos) as part of AVC, only with HEVC.
KidJoe
I don't see a reason why they would only enable Atmos audio for HEVC, especially if they use DASH streams where the audio and video are separate...
In any case, i tested your theory and switched my settings to get AVC instead of HEVC and i can still get the Atmos audio with older releases:

I think maybe the format of the manifest has changed but i just pulled that straight out of my ass.
Seems lots of things are changing in the streaming world as i have heard from multiple people that Amazon has been lowering the bitrates too...