It is a developer option in Android 5. Go to Settings->About Device. Tap Build Number 10 times (you'll see a countdown for the last few taps). When it says you'

It is a developer option in Android 5. Go to Settings->About Device. Tap Build Number 10 times (you'll see a countdown for the last few taps). When it says you're a developer go back one menu. You will see developer options. In there under the drawing section you can change animation duration or disable it entirely.