All ARC & HDMI configured correctly here.

Sky are still broadcasting in Stereo for me.

Sky Settings Audio Set up.... The higher the Quality of sound you select, the quieter the sound goes. - Then the Adverts come on & the volume level to actually hear the Dialogue suddenly BLASTS you out of the Armchair.

NetFlix & Amazon or my Dune 4K Max Vision are fine.

If Deb wasn't insisting we have Sky, I'd tell 'em to "Do One" in a Heartbeat!