EDIT: Appears to be limited to Apple Airfoil/AirTunes compatibility plugin thingie. Disabled just "make discoverable Apple AirTunes devices available locally" and that cut the bandwidth. Normal PulseAudio network devices did not seem to experience the same bug.
EDIT: Appears to be limited to Apple Airfoil/AirTunes compatibility plugin thingie. Disabled just "make discoverable Apple AirTunes devices available locally" and that cut the bandwidth. Normal PulseAudio network devices did not seem to experience the same bug.