I'm getting super low frames in most parts of the game. (15-20ish). I can run others games (ssb, windwaker, re4) at amost perfect 30fps all the time. I don't know what the issue could be. :/ If anyone has any tweaks/fixes that would be greatly appreciated as this is my favorite GC game and it's killing me not to play. 
Cpu : Amd Phenom x4 9750
RAM: 4gb DDR2
GPU: HD7850 core edition
SSD: ASUS ROG RAIDR Pci-e

Cpu : Amd Phenom x4 9750
RAM: 4gb DDR2
GPU: HD7850 core edition
SSD: ASUS ROG RAIDR Pci-e