I have a Yamaha HTR-2071 AVR which won't handle the best audio formats (Atmos, TrueHD, etc) but will do pretty much everything else. When I'm watching a stream on Kodi it will play fine if audio passthrough is disabled, however if I enable it then it plays audio for a second and then the stream chunks up and starts playing without any audio.
Is there something I'm missing? I'd prefer to let the AVR decode the audio rather than Android but most of the stuff I play comes through as PCM, sometimes I get DTS / DD+ on the native Himedia media player.