Increasing buffer sizes of the alsa card did help me. To make sure the module is loaded with the args, disable autoloading of modules:

:
# ### Automatically load driver modules depending on the hardware available
# .ifexists module-udev-detect.so
# load-module module-udev-detect
# .else
# ### Use the static hardware detection module (for systems that lack udev/hal support)
# load-module module-detect
# .endif
:

:
load-module module-alsa-card device_id=0 tsched=true tsched_buffer_size=1048576 tsched_buffer_watermark=262144
:

Credits:

• Phil on raspberrypi.stackexchange.com

Pulse client (e.g. mpd) hangs on second connect (play - stop - play) to local ALSA card via pulseaudio. Loading the idle module with a timeout of 0 helped me out:

in /etc/pulse/system.pa (or default.pa resprectively):

:
load-module module-suspend-on-idle timeout=0
:

sound pulseaudio RaspberryPi