Core Web Vitals are a useful proxy for user experience, but they aren't all equal in business terms. Largest Contentful Paint (LCP) is the one we watch most closely — it maps directly to how fast a user perceives your page as usable.
Our internal standard is an LCP under 2.5 seconds on a mid-range mobile device on a real network, not a lab machine on fiber. That constraint changes which optimizations are worth the effort.
Interaction to Next Paint (INP) matters most on interactive pages — checkouts, dashboards, configurators. Cumulative Layout Shift (CLS) is often the cheapest to fix: reserve space for images and embeds, and most of the score problem disappears.
Written byLaunchNest