Client audio stream underflow, broken pipe
This problem in pulseaudio. I remember that, when you reimplemented libpulse, it improved (pipewire <= 0.3.15). You use original libpulse, the error is back, though less so.
Nov 21 11:26:18 pipewire[2279]: 2 events suppressed
Nov 21 11:26:18 pipewire[2279]: (ALSA plug-in [seren]-57) client too slow! status:triggered
Nov 21 11:26:18 pipewire-pulse[2255]: (ALSA plug-in [seren]-19) client missed 2 wakeups
Nov 21 11:26:18 pipewire-pulse[2255]: (ALSA plug-in [seren]-19) client missed 1 wakeups
Nov 21 11:26:18 pipewire-pulse[2255]: pulse-server 0x55bde6b60340: [ALSA plug-in [seren]] UNDERFLOW channel:0 offset:10775040
...
Nov 21 11:31:14 pipewire-pulse[2255]: pulse-server 0x55bde6b60340: [ALSA plug-in [seren]] UNDERFLOW channel:0 offset:17675520
Nov 21 11:31:14 pipewire-pulse[2255]: pulse-server 0x55bde6b60340: [ALSA plug-in [seren]] ERROR command:14 (GET_PLAYBACK_LATENCY) tag:3040 error:5 (No such file or directory)
Nov 21 11:31:16 pipewire-pulse[2255]: pulse-server 0x55bde6b60340: [ALSA plug-in [seren]] UNDERFLOW channel:0 offset:372480
...
Nov 21 11:33:30 pipewire-pulse[2255]: pulse-server 0x55bde6b60340: [ALSA plug-in [seren]] UNDERFLOW channel:0 offset:25743360
...
Nov 21 11:33:46 pipewire-pulse[2255]: pulse-server 0x55bde60016d0: [ALSA plug-in [seren]] underrun read:849291040 avail:0