Hello Atte,
Best is to disable frequency scaling altogether. Or add more CPU
frequency monitors to your panel, one for each core. And you could take
a look at rtirq:
http://ubuntuforums.org/showthread.php?t=1328175
And the FFADO wiki:
http://subversion.ffado.org/wiki/IrqPriorities
This improved performance on all my machines drastically, especially
with my Focusrite Saffire Pro.
That sounds promising, will check it out tonight. Thanks!
--
Atte