The PulseAudio daemon has the ability to set it’s niceness level after launch. This can be helpful if the process isn’t prioritised properly and sound cuts out now and again. The man page states:
nice-level= The nice level to acquire for the daemon, if high-priority is enabled. Note: on some distributions X11 uses -10 by default. Defaults to -11.
Which makes sense, right? It’s one more, right. It’s not ten, it’s eleven. If you need that extra push, put it up to eleven. So that it gets a little more priority than the default process.
Oh come on, Lennart, that has to be a Spinal Tap joke, right?