Product Recommendation Speed: 56.2% vs 48.4% Pass CWV

    Top 1M stores with a product recommendation engine pass Core Web Vitals 56.2% of the time against 48.4% without, despite carrying about twice the JavaScript, though most of the gap comes from platform mix.

    CWV pass rate with vs without a recommendation engine
    All stores with56.2%
    All stores without48.4%
    Shopify with59.4%
    Shopify without57.7%
    Other platforms with37.5%
    Other platforms without41.3%

    Source: PageSpeed Matters. HTTP Archive top 1M crawl, Sept 2026, mobile, CrUX p75.

    Correlation only. The overall gap mostly reflects platform mix, not the tool.

    Source: Product Recommendation Speed: 56.2% vs 48.4% Pass CWV - PageSpeed Matters