I had audio stutter in all games i started from steam. Running them without steam works without any problems also playing music, watching videos wasnot a problem.
After some testing i found out that if i restart pulseaudio with "pulseaudio --kill" the sound works for one time. So i found the error message "AL lib: pulseaudio.c:612: Context did not connect: Access denied" that sugested that ALSA was used instead of Pulseaudio.
On google i found this page for the error:
There they suggested to set this in the file /etc/openal/alsoft.conf:
This sets ALSA as the first output device and pulseaudio and everything else after it. Now my sound problems are gone and i can enjoy all the games :)