superslow swipe reaction - how to speed up sencha touch / phonegap

i have a simple sencha touch app in mvc style with one view in the viewport: the main view. another panel is popping up as modal floating window when you swipe a finger over the main view. this panel lies inside a variable of the main view script. my problem: on iOs devices (via phonegap) the popup appears really late - like 2-4 seconds after the swipe happend. is this normal or are there ways to speed up sencha touch/phonegap, maybe by preloading the popup, preopening it and making it innvisible...?

开发者_如何学Pythonthnx!

Make sure you aren't installing your app in debug when testing on your device, it's painfully slow.