Someone asked how would I know if the app is hogging the CPU?
There are two ways:
1) Use SeePU, an app that displays a small bar graph showing how busy your CPU is (also your memory, but that's optional)
2) Use Watchdog Task Manager Lite, which watches your CPU and raises an alert if one app is hogging the CPU
I use Watchdog right now. If an app repeated triggers the CPU alert (on default setting) I call it a CPU hog.