Speed blender up

Hi,

i have rigged a character of mine and as i want to animate him and “push” the bones around, Blender acts really slow. Does anyone know some good tips to speed Blender up?
Thank you for your help and your time.

Yours sincerely
Greenality

Oh, I have already find a tip, next time i should put the Multiresoltuion Modifier below the Armateur Modifier. ^^