I have a TCL 65R613 connected to Sonos Beam via ARC.
Using the either the remote or the ios app, I am facing issues:
1. Volume control is slow/not responsive. e.g If I click the volume button 4 times in quick succession on the remote or the app, the TV doesn’t register any or maybe just one click. A few seconds after, the volume would jump to the 4th level
2. Streaming via the tv native apps, volume +/- only happens in steps of 2 numbers using tv remote or tv remote app.
I have restarted the tv, reset the tv settings, there hasn’t been any improvement. No issues while using the sonos app for with internal tv speakers so my understanding is that there is something suboptimal with ARC.