slowdown the scroll speed

Hi there,

thanks for this wonderful plugin.
I would like to know if it is possible to slow down the speed of how fast the scroller moves. I dont mean the time for every news to be displayed but more of how each news scrolls up quickly then is displayed for the time that can be set in the settings. I would like to have it gradually move up at a slower speed.

Thanks once again for the wonderful plugin and your hardwork.

https://ww.wp.xz.cn/plugins/news-announcement-scroll/