Comment 8 for bug 1736222

For those affected by this who want or need speech-dispatcher, another workaround may be to disable timer-based scheduling for PulseAudio.

For most, this can be done by locating the following line in your default.pa file:

    load-module module-udev-detect

...and replacing it with this:

    load-module module-udev-detect tsched=0

(Note: default.pa is usually "/etc/pulse/default.pa", or "~/.config/pulse/default.pa" if you have a local configuration)

This works well on my current system so far. Though, most of my machines over the past few years have been affected by this bug, and I'm not sure if it's quite worked for all of them.