If necessary, move your domain to a FAST web host server. Break them into smaller sections. Browsers typically wait for a table to be complete before it is displayed. Smaller tables will be visible more quickly and will entertain your visitor while the others are still loading. They're EASY to track and fix on static HTML web pages.
Visitors appreciate excellence.
Broken web functions do not make good impressions on visitors. Get a copy of a link verifier and use it. Really effective link verifiers do not yet seem to be available for dynamic HTML pages. Make it VERY easy for a visitor to quickly find what they want. The analogy here is that of supermarkets putting the milk in the back of the stores so shoppers must pass a lot of other merchandise and may make additional purchases.