This is the reason I went LG this time, my Samsung TV has all of the issues you're describing. The LG is marginally better but it still has issues with audio o

This is the reason I went LG this time, my Samsung TV has all of the issues you're describing. The LG is marginally better but it still has issues with audio over ARC and figuring out when to switch on the surround amp and when not to. It'll also randomly switch back to the ARC input if something connected gives it a nudge, while I'm doing something else. I bought high-end in both cases and it really makes you grit your teeth to realise they can't get this right even at the prices you're paying.