

Unsure if the issue is fixed upstream in the kernel however there are a few topics going in depth about this issue with some reported fixes / workarounds.
https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/3182
https://forum.endeavouros.com/t/crackling-microphone/22173
https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/1569#note_1102615
Good luck with the issue, hopefully one of these links fixes that problem for you 🍻
Simplex?
https://github.com/simplex-chat/simplexmq/blob/stable/protocol/overview-tjr.md#threat-model