Dolphin-Bloody Roar-How to get more fps ?

[puppup]

Here we go !
My PC:
CPU T4300 2x2.1 Ghz
VGA: ATI 4570 512 MB
RAM: 2G
Window 7 Home Premium 64 Bit
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Dolphin x64 r4525 ( newest version )
Setting:



I have 150 fps (loading game) but only ~ 30 fps ingame ( too slow for fighting game). I have tried other setting but i've never got more fps. You see i use DirectX 3D Plugin, and when i tried OpenGL plugin, it was slower. Otherwise i had disable other sounds and disable aero.
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Now i want to play this game with more fps and try to use .bat file and game booster so i get 1~2 fps more but it's still slow. I hope you can help me ! Any tip from anyone is helpful for me.
Many thanks !
pUpPuP