Speed up Mission Control animations in macOS Sierra

Introduced in macOS Sierra, the user can control how fast the Mission Control animation moves to the “end view”, by how fast the action is performed on a trackpad. I think the default setting is much too slow, and I don't want to overdo the gesture each time just to get better efficiency out of the animation. This 2012 article refers to settings like these: defaults write com.apple.dock expose-animation-duration -float 0; killall Dock for fast animations, and to reset: defaults delete com.apple.dock expose-animation-duration; killall Dock I have tried them in Sierra and they don't work.