Hi there,
1. ensure you do NOT have the Mobile Header enabled in Customizer > Layout > Header.
2. set the Mobile Menu Breakpoint to 0 in Customizer > Layout > Primary Navigation.
3. Dequeue any menu related scripts ( NOTE: this includes Drop downs ) with this PHP Snippet:
add_action( 'wp_enqueue_scripts', 'tu_remove_menu_scripts', 50 );
function tu_remove_menu_scripts() {
wp_dequeue_script( 'generate-menu' );
wp_dequeue_script( 'generate-dropdown' );
}
GP only loads the scripts it needs. And the only jQuery dependency is the Sticky Navigation.