Uninstall all kind of task killer and battery saver applications.
Go to System > Developer options and set Animation scale .5x for Window animation scale, Transition animation scale and Animation duration scale.
Disable "Don't keep activities" and set standard limit for Background process limit in developer options.
Disable following useless application. Go to System > Apps > All. Click on a application and click disable button.
Android Live wallpapers, Assist, Bubbles, Cloud Print, Email, Google Play Newsstand, Google Text-to-speech Engine, Help, Hp print service plug in, Market feedback agent, Motorola Check in, Motorola Migrate, Music Visualization Wallpapers, Quick office, Rescue, Talk back, Trusted Face.
Uninstall unused applications.
Finally restart the phone. After restart your phone's performance must increase 20-30%.