Thanks for the bug report.

It looks like you are using Bluetooth audio and also experiencing lots
of kernel crashes in the rtw88_core module.

Just in case the kernel crashes are not related, please check that you
don't still have the Settings window open as that can cause some audio
quality problems.

Next, please try disabling wifi. Because 2.4GHz wifi networks can
directly interfere with Bluetooth signal quality.

Please also run:

  lspci > lspci.txt
  lsusb > lsusb.txt

and attach the resulting text files here.

** Summary changed:

- [CMT-SBT20, playback] Underruns, dropouts or crackling sound
+ Bluetooth audio underruns, dropouts or crackling sound

** Changed in: pulseaudio (Ubuntu)
       Status: New => Incomplete

** Tags added: a2dp

** Package changed: pulseaudio (Ubuntu) => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/1913947

Title:
  Bluetooth audio underruns, dropouts or crackling sound

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