Some games crash for no reason

[Sergiu]

Hey. I am sorry if this post is in the wrong section as I am completly new to PPSSPP and its forums. I wanted to ask why some games work normally when watching the intro for example, but as soon as you start controling it automatically blocks my phone.For example, Final Fantasy VII Crisis Core starts with the intro that goes on for like 4 minutes with full speed, then as soon as I get the control.and press X it blocks my phone and I can't do anything unless I remove my battery. Same goes for Smackdown Vs Raw 2011, and GoW Ghost of Sparta doesn't even boot, it says 5/60 fps and its blackscreen. Only Tekken 6 and Naruto Kizuna Drive worked so far.
I am using an Allview P5 Quad phone
1.2GHz quad core
1GB ram