Animations and live wallpapers on your device consume more CPU cycles to run and drains more battery. Every time you activate your mobile live wallpapers on it consumes system resources to run. Thus it is advised to avoid all such animations on your device for better performance.
When my android device is slow, I use [Clean King] to give it a quick boost! You also can try it!: https://play.google.com/store/apps/details?id=com.yjapp.cleanking