5.1 Playbar Sub 2xPlay3 S2 Nvidia Shield 2019
When watching Stereo PCM via Nvidia Shield (IPTV, Tidal, Netflix etc) I get Stereo Upmix on my surround speakers (Play3s), but when watching SOME STREAMS on Twitch (also stereo PCM via Shield) I don't get no Sound on my Play3s. Some other Twitch Streams (also Stereo PCM) play the sound as expected on the Play3s.
What is Twitch doing different about Stereo? Thanks!