User blog:Baristan/Tiny Village performance

I've been playing TinyVillage on a friend's nook color. It runs ok most of the time, but slows down and pauses whenever trying to chain. I've tried over-clocking from 800mhz to 1200mhz with little gain in performance( even tried 600Mhz with little effect), so I don't think it is CPU limited. Is it limited by running Android from a microSD card, only having 512MB of ram, or the slow gpu? I am thinking of buying a new tablet and would like to know what hardware is required to play this game hiccup free.