4k NBCSN channel no Surround Sound?
I have a Sonos Arc with Sub and Surround speakers. I have my xfininty box set to Expert mode. When I watch any of the regular channels I don't have any issues with the sound. When I have the option with Sports to switch to 4k the surround stops working and the audio sounds weak from the arc. I know it's nothing to do with the Sonos. Is this just a box issue or do I have to select something in the settings I'm missing??? I've tried to switch back to just regular 5.1 mode but still not working. Anyone else have this issue or a fix??