There is a lot of components in the top part of the web page that is slowing down the web page from being visible for your customer.
When a customer visits your website the goal is to provide the customer with what they are after as soon as possible. Therefore if you have a lot of unnecessary components in the top half of your page then this will slow down the page from appearing quickly for your customer.
See if there are components to the page that can be loaded later rather than in the initial rendering of a page. For example, if your loading a page for a blog then loading the article first rather than the navigation and sidebar would allow the customer to begin reading the article faster. For an e-commerce website showing the customer, the product first will be most important. Your web developer can re-prioritise the content being loaded on a page.