Unless it's HEAVILY optimized over the desktop version, BlueStacks has an incredibly long way to go.  I don't know if it's poor emulation or if it's just a super complex process, but my computer (which could probably power a small country) runs most apps from BlueStacks so poorly they feel like trying to code in Eclipse.  Slow, unresponsive, sluggish, lethargic, and any other adjective that means "takes forever to respond."