4k video playback via the receiver stops

This is what I’ve done at the end in case it was useful for somebody landing here in the future.

  • Connect the Vero4k+ directly to the display via HDMI.
  • Connect the Vero4k+ to the AVR using a TOSLINK cable.
  • Mute HDMI audio output (display settings) on the Vero4k+.
  • Enable DD and DTS pass-though.
  • Enable AC3 transcoding (see guide).