Good evening Peter,
After reinstalling my XXhighend I am listening to it right now. This new z3 (is it a BMW )is very good at first sight.
I have found some interesting stuff about optimal audioplayback.
http://www.sweetwater.com/sweetcare/ts/detail.php?Index=31969&Keyword=windows+optimizationfalse
It is all about optimizing your os. Just take a look and see if this is suitable. I made the changes right away.
I think it is very helpfull and interesting. It tells step by step what to do.
Just take a look.
Regards,
Ronald