Page Speed Is Now More Important for SEO

The metrics measure visual load with Largest Contentful Paint (LCP), visual stability with Cumulative Layout Shift (CLS), and interactivity with First Input Delay (FID).
Page experience and the included Core Web Vital metrics will officially be used for ranking pages in May 2021.
The easiest way to see the metrics for your site is with the Core Web Vitals report in Google Search Console. With the report, you can easily see if your pages are categorized as “poor URLs,” “URLs need improvement,” or “good URLs.”