dolphin.exe and dolphinIL.exe?

[SantaC]

I run Wind Waker with E8400 @ 3.3 ghz
4gig ram
windows 7
geforce gts 250

I get between 15-27 fps when i run the maingame with normal dolphin.exe dual core enabled, there must be some setting I do wrong because that feels pretty slow for my comp.