Disable Superfish Menu Fade / Slide / Transition

Hmm, try this:

<script>
    jQuery( window ).load( function() {
        jQuery( '.sf-menu .menu-item-has-children' ).GenerateDropdownMenu.destroy();
        jQuery( '.sf-menu .menu-item-has-children' ).GenerateDropdownMenu({
                transition_speed: 0,
		open_delay: 0,
		close_delay: 0
        });
    });
</script>

Genius! Thank You!

You're welcome :)

Just a heads up that this jQuery function has been removed in GP 2.0 (being released this week).

The sub-menu uses CSS now, so it's easier to adjust. Here's an example: https://generatepress.com/forums/topic/disable-menu-animation-on-hover/#post-436051

Thank you Tom!

No problem! :)