Dolphin 4.0 won't run Wind Waker smoothly

As the Title says, i'm not getting higher than 10-20 FPS which really makes Wind Waker pretty unplayable with all the aiming that needs to be done and Stuff. I tried some different Settings i found while googling and they didn't help me out so i came here with the Hope that someone might know a Way to resolve this :/

My Computer Specs are:

Windows 7 x64
AMD Athlon X4 750k processor with 3,4GHz Base
AMD Radeon 7770 HD Graphicscard
4GB Ram
(if more Information is needed, just ask)

If necessary, my Dolphin Settings:

General

http://puu.sh/7aCWf.png

Graphics Part
General

http://puu.sh/7aCRf.png

Enhancements

http://puu.sh/7aCRM.png

Hacks

http://puu.sh/7aCSt.png

(those are just Picture Links, in case you wonder what weird Site this might be)

So yeah, hopefully you Guys can help me out asap
Regardz Orfrøn~