Did you end up getting a new cable? I’m also wondering if a higher speed HDMI cable will be any better than the one it comes with in the box

But what if you have a high end soundbar like the Q990C, would audio quality be good with an ATV? Isnt audio quality better when it’s directly from the TV to the soundbar vs ATV to tv then to soundbar? I don’t want to give up on good audio just for a smoother OS.