Server Version#: 1.24.4.5081
Player Version#: 8.24.1
TV: lg-49UJ635V (latest firmware 05.80.65)
Surround: Sony HT-S20R
This is just to say that the new audio passthrough options robbed me completely of 5.1 surround sound on my setup. No combination of settings is producing 5.1. Because for many versions, 5.1 was terribly unsynced with video (the whole sad story here), I resorted to not usung Chromecast at all and used Plex on webOS only. But hearing about new sound settings gave me hope. So now Chromecast sends 2-channel LPCM (says Opus?!) even with the only workaround that worked (apart from lipsync): Optical (even though connection was always HDMI).
I just hope similar “update” is not coming to the LG webOS app, because I won’t be able to watch anything.