This post will show you how to change the speed of the osx mission control animation

open terminal:

# very fast
defaults write com.apple.dock expose-animation-duration -float 0.1
killall Dock
# fast
defaults write com.apple.dock expose-animation-duration -float 0.15
killall Dock
# slow
defaults write com.apple.dock expose-animation-duration -float 1
killall Dock
# disabled
defaults write com.apple.dock expose-animation-duration -float 0
killall Dock
# normal
defaults delete com.apple.dock expose-animation-duration
killall Dock