Ezoic's AI largely focuses on measuring desired outcomes such as pageviews per visit when making decisions as to when and where to show ads. Site speed is therefore an indirect rather than direct focus because it can influence user experience indicators like pageviews per visit, bounce rate, and time on site. If site speed is suboptimal, these user experience metrics will likely deteriorate. As such, Ezoic's AI tends to indirectly prioritize actions that positively impact site speed.
Ezoic also measures the wider impact of any changes we make on a site's Core Web Vitals before they are rolled out. When it comes to measuring site speed as a publisher, Ezoic encourages you to focus on your site's Core Web Vitals (Google's own measurements for site speed and its impact on the user experience) because each of the Core Web Vitals represents a distinct facet of the user experience, is measurable in the field, and reflects the real-world experience of a critical user-centric outcome. The Leap toolset even helps publishers to optimize their Core Web Vitals - you can learn more about this here and read how to get started here.