its playable with low fps, for me XD (i guess because i can't use shaders to help increase fps because of my ATI graphics card XD)
My system:
intel core i3-350M 2.26Ghz
1 gig ATi Radeon HD 5650
4 gig RAM
Windows 7 64 bit (but i'm using jpcsp 32 bit SVN 2098)
Settings:
Video:
- Only Ge Graphics
- Enable saving GE screen to textures instead of memory
Media:
- Use media engine
- decode audio files with sonic stage
...everything else (settings) is in default
Issues based on my system:
1. amvs are flickering
2. fps slows way down when there are voices (of chars. etc.) and all voices are creaking XD
3. fps on gameplay enduringly slow
but nice work so far jpcsp coders
keep up the good work! looking forward to the SVNs to come 
My system:
intel core i3-350M 2.26Ghz
1 gig ATi Radeon HD 5650
4 gig RAM
Windows 7 64 bit (but i'm using jpcsp 32 bit SVN 2098)
Settings:
Video:
- Only Ge Graphics
- Enable saving GE screen to textures instead of memory
Media:
- Use media engine
- decode audio files with sonic stage
...everything else (settings) is in default
Issues based on my system:
1. amvs are flickering
2. fps slows way down when there are voices (of chars. etc.) and all voices are creaking XD
3. fps on gameplay enduringly slow
but nice work so far jpcsp coders
keep up the good work! looking forward to the SVNs to come