Super Mario Sunshine Issues

[Xuiryus]

Hey I'm having some major issues with Super Mario Sunshine. I'm struggling to get 30 FPS and there appears to be invisible goo everywhere or something. I set the RFB copy to RAM which kills my FPS but supposedly fixes the Goo? Once I set it to texture I get decent 25-30 FPS with the occasional drop. What's going on with this? I thought SMS didn't need much CPU power? My graphics drivers are up to date and I am using Dx11. My dolphin graphic setting is Dx9 mode, as it seems to be less laggy and give more FPS.

Spec:

Dolphin Build: SVN Revision 5152
OS: Windows 7 Home Premium 64 Bit
CPU: AMD Athlon II x 3 425 Processor 2.70GHz
RAM: 3GB 2.75GB Usable
Graphics Card: Nvidia GeForce 9200 with 1392 mb ram? (Says in dxdiag?)

[GodRays]

1) Are you using the x64 version of Dolphin ?

2) Post here :
http://forums.dolphin-emu.org/thread-771.html