IspCP limiting my system resources

[psygarden]

I've been running ispCP for some time now and must say that quite a few websites are running awfully slow if they have a somewhat more cpu-heavy php script running...

My cpu never ever (ever) peaks over 10%, but still sometimes i have to wait 5 seconds for a page to load (or worse, the 500 - internal server error message) ...

i'm quite sure it has to do with the configuration of the fast-cgi parents/children but haven't got a clue how to configure them...

can anyone give me some advice on how to un-limit the cpu usage for all websites?

kind regards,
Rik