Google Pagespeed insights and Core web vitals report not matching

[Tech Zotezo]

Hi,

Our site run on multisite www.zotezo.com  www.zotezo.com/in and www.zotezo.com/us

But I have seen Maximum pages on pagespeed insights showing above 90+ rank in Mobile and desktop with good LCP,CLS,FID score  in Lab data, but core web vitals rank on month of August is not improved.How to get better results in report https://datastudio.google.com/u/0/reporting/5682190f-4ca1-424b-9857-d77f14fc3b86/page/keDQB?params=%7B%22df134%22:%22include%25EE%2580%25800%25EE%2580%2580IN%25EE%2580%2580202008%22%7D

What was the other factor?

Thanks,

Dwaipayan

[Rick Viscomi]

Hi Dwaipayan,

Some pages may be getting good lab scores, but the data in the CrUX Dashboard is showing you real users' performance in the field. Here are a couple of questions to help you focus on improving performance in the field:

Field data in the CrUX Dashboard is aggregated at the origin-level, so popular pages are weighted higher. Are the pages you're testing in the lab the pages that also get the most traffic?

Are the lab tests configured in a way that is representative of your users? Network and CPU speeds can be emulated in Lighthouse, but PageSpeed Insights only uses one emulation configuration per desktop and mobile test. If you have data on users' speeds, you can fine tune the emulation to be more representative. Device and effective connection type (ECT) data are available in the CrUX Dashboard. If you know that your users are on high or low end mobile devices, you can adjust your CPU emulation accordingly.

Hope that helps.

Rick

[Tech Zotezo]

Hi Rick,

Thanks for your opinion.

>> Are the pages you're testing in the lab the pages that also get the most traffic? 

----> Yes mostly. 

>> Are the lab tests configured in a way that is representative of your users? Network and CPU speeds can be emulated in Lighthouse, but PageSpeed Insights only uses one emulation configuration per desktop and mobile test. If you have data on users' speeds, you can fine tune the emulation to be more representative. Device and effective connection type (ECT) data are available in the CrUX Dashboard. If you know that your users are on high or low end mobile devices, you can adjust your CPU emulation accordingly 

Can you please explain in more detail in which area I have to focus more based on my report? 

https://datastudio.google.com/u/0/reporting/5682190f-4ca1-424b-9857-d77f14fc3b86/page/UWDQB 

>> If you know that your users are on high or low end mobile devices, you can adjust your CPU emulation accordingly 

Anything needs to improve from the server end?

Thanks.

Dwaipayan

[Rick Viscomi]

Hi Dwaipayan,

Since ~80% of your users are on phone devices, looking at phone data it seems that FID and CLS are already meeting the CWV threshold of 75% "Good". LCP is at 73.9% so it's falling just short. I'd recommend reading https://web.dev/optimize-lcp/ for actionable advice on improving your LCP performance.