The lab (synthetic, throttled) mobile Largest Contentful Paint measures 12.8s versus a 1.8s real-user field LCP — a first-time, uncached visit on a constrained mobile connection is far heavier than the cache-warmed average real users mostly experience (measured via PageSpeed Insi
Because the 12.8s lab LCP reflects an unprimed cache and throttled hardware, new shoppers and lower-end devices likely hit the slow tail while returning users stay fast — the gap sits exactly where new leads land (measured via PageSpeed Insights / CrUX, 2026-06-19).
An illustrative redesign that resolves each measured finding below. Concept art — not a live build or quoted scope.