Pipewire-pulse consuming huge amounts of memory

[Alan Pope 🍺🐧🐱 🦄]

I noticed my RAM usage was high.
pipewire-pulse is the highest user of RAM on my system.
The system has been up for four days. I have used all manner of audio applications in that time, including Slack huddle, Zoom, mpv, VLC and Microsoft Edge (YouTube, Netflix) and Kdenlive.

alan@ziggy:~$ pactl stat
Currently in use: 7865827 blocks containing 2.1 GiB bytes total.
Allocated during whole lifetime: 42983702 blocks containing 3.6 GiB bytes total.
Sample cache size: 275.2 KiB

alan@ziggy:~$ sudo python3 bin/ps_mem.py | tail
207.7 MiB + 419.6 MiB = 627.2 MiB gnome-shell
227.3 MiB + 455.3 MiB = 682.7 MiB syncthing (2)
385.4 MiB + 855.8 MiB = 1.2 GiB slack (8)
409.5 MiB + 928.5 MiB = 1.3 GiB Discord (8)
  4.2 GiB + 8.9 GiB = 13.1 GiB msedge [updated] (45)
 14.1 GiB + 28.2 GiB = 42.3 GiB pipewire-pulse
---------------------------------
                         62.7 GiB
=================================

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: pipewire-pulse 0.3.65-3
Uname: Linux 6.2.2-060202-generic x86_64
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 26 10:24:47 2023
DistributionChannelDescriptor:
 # This is the distribution channel descriptor for the OEM CDs
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-sutton-focal-amd64-20220803-89+sutton-focal-amd64+X02
InstallationDate: Installed on 2022-08-05 (263 days ago)
InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary 20220803-13:42
SourcePackage: pipewire
UpgradeStatus: Upgraded to lunar on 2023-01-02 (113 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.