Smooth Scroll

Hi all, ive noticed running certain browsers my site is quite slow to respond to scrolling and isn't overly responsive.

Is there something I can do to improve the response for my users as it's quite slow at the moment.

Thank you

My guess is it's because of the banners loading.?

Tried it on Chrome via desktop and it loaded fast and scrolled smooth for me

Looks ok for me on first page load. In what browsers do you see the issue?