Well if the processor isn't fast enough, and they have seen it before, then why would they make the app downloadable to devices that it won't work correctly on? That makes no sense. If you got it through Google, then they have that set up, so that the apps can be restricted to only devices that it would work on. Sounds a bit like the apps creators may not have listed that info. They should have at least mentioned it in the apps public info rather than leaving you to download it and find out after the fact. If it isn't a free app, I would consider asking for your money back.