Page speed isn't just a technical metric—it's a conversion killer for affiliate marketers. Research shows that even a one-second delay dramatically reduces broker signups and commission potential, especially for trading affiliates where users rapidly compare multiple platforms. Fast-loading sites signal professionalism and trustworthiness, keeping visitors engaged through the entire conversion funnel. This guide reveals the direct connection between Core Web Vitals, user behavior, and affiliate revenue, plus actionable WordPress optimization strategies that improve both search rankings and click-through rates without sacrificing functionality.