Without Animation
Disable animations for instant timepicker display
Disable Animation
#With ui.animation: false the picker opens and closes at once, with no fade. When the system asks for reduced motion (prefers-reduced-motion), the picker does the same without this option.
Performance Mode
#No fade and no backdrop. behavior.delayHandler is 0 by default, so the picker starts to close as soon as you press OK or Cancel. Set it only if you need an extra wait before closing.
No Animation with Theme
#Disable animation while keeping theme styles:
Accessibility First
#Disable animations while maintaining accessibility features: