Hello, I have just been lucky enough to buy a Sonos arc. It is connected to my Samsung 2017 QE55Q6FAM TV via standard HDMI arc ( it does not have e-arc). Following watching Jack Ryan in Dolby Atmos on Amazon Prime and going back to sky the tv switches the “Digital output Audio for” setting to PCM! I have to keep going back into the tvs sound expert settings to change it back to Dolby digital or Dolby digital plus. TV s current software is 1290. SkyQ box is set to DD plus, TV input to Bitstream. Welcome any thoughts please. Thank you.