$(document).ready(function()
{
$('#collezioniD').boutique({
container_width: 3910,
front_img_width: 780,
front_img_height: 470,
starter: 1,
speed: 800,
hovergrowth: 0,
behind_opac: 0.3,
back_opac: 0,
behind_size: 1,
behind_distance: 782,
back_size: 1,
autointerval: 4000,
});
});

avevo aggiunto autoScrollingStep: 1 ma non m funziona