Same here. Drives me nuts!
A common complaint, whether using in-built tv speakers or soundbars. There’s no standard broadcast level for programs, movies, adverts… Complain to your broadcast regulators, but don’t blame tv or external speaker manufacturers.
Yeah, me too. It wasn’t an issue with the older Arc. It seems to happen more with off air local commercials and football broadcasts. When I stream using Apple TV I don’t notice it. So it might just be garbage in garbage out when using the antenna. lol.