1. Products widget in the mega menu loads 245×280 try to decrease it to 65×75 for example in WooCommerce -> Settings -> Products -> Display -> thumbnails images size.
2. Instagram element also has large images. Try to edit this element with WPBakery Page Builder and change images size to thumbnails.
Thanks for the quick response!
It depends how long until the next update? If the update will be in the next week it is ok, otherwise I would like to have the instructions, because the site is going viral soon..
Thanks and regards