I have my Sky Q connected to my Playbar using HDMI in and Optical out through my Samsung Smart TV. The sound quality is poor, very tinny. I find if I set Sky Q to Dolby some channels have no sound at all, so I have to set it to Normal. My TV audio is set to PCM. I don't have a Sonos sub, and I am finding I have to set the bass to maximum to get any depth at all to the sound. I also have two Play 1s set up for surround sound but when using Sky Q I hardly hear anything through them, just the occasional almost undetectable sound.
Playing music through the system is fine, and playing Netflix on my TV through the Sonos system is fine as well. it's just Sky Q. When I switch to Spotify or Netfix from my Smart TV the volume blasts out all of a sudden, the Sky output volume is extremely low.
I don't want to connect Sky Q audio optical out directly to the Playbar as then the playbar won't receive any other audio source from the Smart TV, e.g. Netflix, Amazon Video, Spotify etc. and I don't think it improves the sound anyway.
I would go so far as to say the sound quality from the TV speakers is better than my Sonos setup when using Sky Q.
Anyone got any suggestions?