Playing to MOST soundcard "ep016ch" currently results in constant buffer under-runs. Sound is crackling/choppy and does not recover.

Here the journal log when executing "gst-launch-1.0 audiotestsrc ! pwaudiosink":

Aug 09 07:32:54 m3ulcb pipewire[3999]: Hardware PCM card 2 'Microchip MOST:2' device 0 subdevice 0
Aug 09 07:32:54 m3ulcb pipewire[3999]: Its setup is:
Aug 09 07:32:54 m3ulcb pipewire[3999]: stream : PLAYBACK
Aug 09 07:32:54 m3ulcb pipewire[3999]: access : MMAP_INTERLEAVED
Aug 09 07:32:54 m3ulcb pipewire[3999]: format : S16_LE
Aug 09 07:32:54 m3ulcb pipewire[3999]: subformat : STD
Aug 09 07:32:54 m3ulcb pipewire[3999]: channels : 6
Aug 09 07:32:54 m3ulcb pipewire[3999]: rate : 48000
Aug 09 07:32:54 m3ulcb pipewire[3999]: exact rate : 48000 (48000/1)
Aug 09 07:32:54 m3ulcb pipewire[3999]: msbits : 16
Aug 09 07:32:54 m3ulcb pipewire[3999]: buffer_size : 1344
Aug 09 07:32:54 m3ulcb pipewire[3999]: period_size : 84
Aug 09 07:32:54 m3ulcb pipewire[3999]: period_time : 1750
Aug 09 07:32:54 m3ulcb pipewire[3999]: tstamp_mode : ENABLE
Aug 09 07:32:54 m3ulcb pipewire[3999]: tstamp_type : MONOTONIC
Aug 09 07:32:54 m3ulcb pipewire[3999]: period_step : 1
Aug 09 07:32:54 m3ulcb pipewire[3999]: avail_min : 84
Aug 09 07:32:54 m3ulcb pipewire[3999]: period_event : 0
Aug 09 07:32:54 m3ulcb pipewire[3999]: start_threshold : 9223372036854775807
Aug 09 07:32:54 m3ulcb pipewire[3999]: stop_threshold : 1344
Aug 09 07:32:54 m3ulcb pipewire[3999]: silence_threshold: 0
Aug 09 07:32:54 m3ulcb pipewire[3999]: silence_size : 0
Aug 09 07:32:54 m3ulcb pipewire[3999]: boundary : 6052837899185946624
Aug 09 07:32:54 m3ulcb pipewire[3999]: appl_ptr : 0
Aug 09 07:32:54 m3ulcb pipewire[3999]: hw_ptr : 0
Aug 09 07:32:54 m3ulcb pipewire[3999]: [E][000000268.861595][alsa-utils.c:544 alsa_recover()] 0xaaaab938e8b0: xrun of 12421 usec 596 0.000000
Aug 09 07:32:54 m3ulcb pipewire[3999]: [E][000000268.929796][alsa-utils.c:544 alsa_recover()] 0xaaaab938e8b0: xrun of 10076 usec 483 0.000000
Aug 09 07:32:54 m3ulcb pipewire[3999]: [E][000000268.997693][alsa-utils.c:544 alsa_recover()] 0xaaaab938e8b0: xrun of 6224 usec 298 0.000000

The issue relaxes if you modify /usr/bin/unicens-config.sh to provide larger/more buffers.
Modify the follwing lines...

echo 128 > /sys/devices/virtual/most/mostcore/devices/mdev2/ep01/set_number_of_buffers 2>/dev/null
echo 6048 > /sys/devices/virtual/most/mostcore/devices/mdev2/ep01/set_buffer_size 2>/dev/null

within this section...

##########################################
# interface: mdev2
#aim: sound
#name: ep01-6ch.6x16
echo tx > /sys/devices/virtual/most/mostcore/devices/mdev2/ep01/set_direction 2>/dev/null
echo sync > /sys/devices/virtual/most/mostcore/devices/mdev2/ep01/set_datatype 2>/dev/null
echo 16 > /sys/devices/virtual/most/mostcore/devices/mdev2/ep01/set_number_of_buffers 2>/dev/null
echo 1008 > /sys/devices/virtual/most/mostcore/devices/mdev2/ep01/set_buffer_size 2>/dev/null
echo 12 > /sys/devices/virtual/most/mostcore/devices/mdev2/ep01/set_subbuffer_size 2>/dev/null
echo 42 > /sys/devices/virtual/most/mostcore/devices/mdev2/ep01/set_packets_per_xact 2>/dev/nullecho mdev2:ep01:ep01-6ch.6x16 > /sys/devices/virtual/most/mostcore/aims/sound/add_link 2>/dev/null

However, there is still 2 seconds of disturbance after starting to play audio.
Speaker-test on ALSA works fine.