Change Scroll Speed

How do you speed up the rate of scroll?

I see where you change the speed of the delay before it starts to scroll, but not the actual scroll speed…

Can I add it somewhere in the php code below?

$instance=array(‘title’=>’Example’,’maxitem’=>5,’padding’=>5,’add_link_to_title’=>1,’show_content’=>1,’delay’=>5,’height’=>185,’scrollamount’=>1)

https://wordpress.org/plugins/vertical-news-scroller/