Unfortunately LG has terrible sound - but a soundbar works well.
Unfortunately the LG soundbars - which integrate well with the TV - use a wifi based wireless subwoofer. the soundbar becomes a wifi access point.
There don't appear to be any wired soundbars. I guess a component speaker system + receiver is the solution, which is probably much better sound anyway.
I ended up with a Costco 85" LG and unplugged the WiFi card before turning it on, and so far it's worked very well for me.
I wish I could have voted with my wallet on this.