Is this possible in Jpcsp?

[montcer9012]

I don't know which speed hacks will be implemented when dev work on it, but for now you have:
Vertex Cache: The most important speed boost that work with many games.
Use Shaders: Some games speed up when Shaders are on.
Enable decode of indexed textures (Using CLUT) in shaders: Enable it with Shaders and you will speed up some games.
Disable UBO: If you have ATI/Intel video card, this option will help.