Yes that is more or less the issue I needed to fix as well. My issues where fixed by creating a new config at ~/.config/wireplumber/wireplumber.conf.d/alsa-vm.conf with the following content:

# ALSA node property overrides for virtual machine hardware

monitor.alsa.rules = [
  # Generic PCI cards on any VM type
  {
    matches = [
      {
        node.name = "~alsa_output.*"
      }
    ]
    actions = {
      update-props = {
        session.suspend-timeout-seconds = 0
      }
    }
  }
]