Its a great platform but I am still finding the animations to be slow and buttons to be a little less responsive, particularly on the blackberrry platform but a

Its a great platform but I am still finding the animations to be slow and buttons to be a little less responsive, particularly on the blackberrry platform but also on the iOS platform. This is forcing me to explore Sencha Touch. I would rather stick to jQuery mobile (for simplicity) than learn a new framework. Hopefully when its out of beta?