FPS Problem with Dissidia

[tolgum01]

Computer settings first:
windows 7 SP1 64bit
AMD Phenom™ II X4 945 Processor 3,00 GHz
8,00 GB RAM
AMD Radeon HD 7750 1gb DDR5

I hope those are the most important information you need.

Now to my problem. I try to play dissidia on the jpcsp now for a whole week. But even with different settings i cant get over 12FPS on some maps and it is really annoying.

I use the newest JPCSP available (2958)
settings in video:
only GE graphics
vertex cache
enable saving GE

enable compiler (50)

thanks for your help