During a hangout, one SEO professional asked John Mueller about low page speed scores and if they can impact your rankings.
Their question was: does a low rating in terms of mobile results on Google page speed, such as LCP, FID, could this affect their website rankings after the introduction of the new page experience algorithm last summer?
They were ranking 4th around their city, then they found out they had a bad page speed rating in Core Web Vitals. Could it be that this is the problem with those rankings?
John explained that it could be. But, it’s hard to say just based on that. He thinks there’s perhaps two things to watch out for.
First, the number that they gave him sounds like PageSpeed insights scores are generated on desktop and mobile.
He thinks that they don’t use it in search for rankings. They use the Core Web Vitals, the LCP, FID, and CLS. The metrics that Google uses are based on what users on Google actually see.
John recommended that they go into Search Console’s Core Web Vitals report, and this should show whether the numbers are within good or bad ranges.
This happens at approximately the 27:25 mark in the video.