God Eater Burst Problem

[taufiqpratama]

Hello guys,I have problems with God Eater Burst on my PPSSPP

First problem is... The graphic going insane after I play about 2-3 mission
here's the screenshot :



And the second problem is... There's always no sound whenever I entering the cutscene,also the movie has no sound,same like cutscene

Please have me solve the problem,I've googling it many times and still can't figure how to solve it

I'm sorry for my bad english,thanks a lot XD