Anytime you navigate between Spaces in OS X there’s a animation, this is nice but it makes switching between Spaces slower. You can disable the animation with the following command:
defaults write com.apple.dock workspaces-swoosh-animation-off -bool YES
To make the command take effect, you need to restart the Dock
killall Dock
Revert to the default setting:
defaults write com.apple.dock workspaces-swoosh-animation-off -bool NO