touch buttons slow response

[Jerod]

I've been using the ppsspp for a while now but since the latest update when I press the touchscreen buttons I have to hold it down before it picks it up so I cant play any fast paced games now. Im using a Sony Xperia Z(C6603) with Android (4.3)
This happens on all my psp games and im not sure how to go about correcting this. Any help would be appreciated.