Android: Speed up opening windows

I'm building an iOS and Android app using Alloy (with 3.4.1 and Alloy 1.5.1).

From a listview I open some items. Currently I do this on Android:

$.itemViewController = Alloy.createController('itemView', args);
$.itemViewController.itemViewWindow.open();

But it opens rather slow (1-1.5 sec). On iOS it's fast as f*ck. So is there any way I can speed things up on Android? Perhaps keep the itemView window available so Alloy.createController only gets called the first time I use it?

The Android Pinterest app slides in their item views from right to left and it's quite snappy. Something along this would be nice.