On each forum page outside of the Wiki forums (even on non-forum-content pages such as misc.php), I see two CSS files are included which are related to VaultWiki:
special-2664521c-00011.css?v=257
special_important.css?v=257

Two Javascript files are included, too:
special_section.js?v=257
special_autolink.js?v=257

It would be great if VaultWiki didn't inject its CSS and Javascript into unrelated forum pages. Because of this, each forum page requires 4 additional HTTP requests before it could be displayed. It's a big no-no according to the best practices for making a fast web site.