I am seeing an issue with pausing Hulu on the new 4800 Ultra while using ARC. If I pause Hulu (Helstorm program) I lose audio via ARC. It doesn't happen on Netflix or other Apps or when using the remote headphones with Hulu. I've tried multiple settings & switching HDMI ports to create a new handshake and still no joy. Typically the TV and or Roku crashes & restarts after HDMI switching.
Edit: I get Netflix Dolby Vision and Atmos fine via ARC with no pause issues
Issue still exists after second 9.4.1 update....