Desktop LCP issue in Google Core Web Vitals

Hello,

I have an LCP issue in Google Core Web Vitals. The LCP for DESKTOP is taking longer than 2.5 seconds.

I am using WP Rocket and have already configured it according to your instructions, but the problem still persists.
Will setting up a CDN solve the issue?
Could you please help me identify the cause and suggest how to improve the LCP score?

Thank you in advance.

Hi there,

Thanks for reaching out.

If you’re open to it, we can review your current setup and install a few extra plugins to see how we can optimize the LCP on your website. We also need your permission to make configuration changes to test different tricks that may boost the performance.

Kind regards,
XTemos Studio

Hi Serg,

Thank you for your reply.
Yes, I’m open to it and I give you permission.
Please let me know if you need any additional information.

Best regards,
Irina

Hello,

We have analyzed your website and performed the following actions:

1. Optimized File Settings: We disabled several options under the “Optymalizacja plików” tab (https://take.ms/bKzehh). These settings were not providing any benefits, as all your files are already minified.

2. Media Settings adjustment: We also disabled a few options under the “Media” tab (https://take.ms/4SqQY):

• “Włącz dla obrazów”: In your case, the default WordPress lazy loading works perfectly, so there is no need to load additional JavaScript for this.

• “Preload fonts”: Your website uses the “Mailpoet” plugin, which loads numerous fonts. They might be used somewhere, though we could not locate where. WP Rocket detected these fonts and started preloading them. This meant that unused fonts were being loaded with high priority, negatively impacting both FCP and LCP. We disabled this behavior using the snippet from this guide (https://kb.mailpoet.com/article/332-how-to-disable-google-fonts) and turned off the preload option completely, since your Theme Settings already have font-display: swap enabled (https://take.ms/3gLOU7). Combining both swap and preload is unnecessary.

• “Self-host Google Fonts”: We disabled this option because your Theme Settings already have a feature enabled that stores fonts locally.

3. Fixed Image Preloading: After disabling font preloading, the image preloading started functioning correctly. As a result, the images affecting LCP are now loading with the proper priority. (It appears that having too many concurrent font and image preloads caused an issue where WP Rocket prioritized the fonts and completely ignored the images).

4. Lazy Load Exclusions: We added the LCP-affecting images to the lazy load exclusion list. You should never simultaneously preload an image and apply lazy loading to it (https://take.ms/tANoD).

5. Server Load Reduction: Since your server performance is unstable, we disabled these two options (https://take.ms/EObRO) to prevent putting an extra load on it.

6. Mailpoet Optimization: The “Mailpoet” plugin was also loading a CSS file containing font connections that took up about 250 KB. Curiously, these fonts were not even being used. This is another major reason why we highly recommend keeping this fix active: https://kb.mailpoet.com/article/332-how-to-disable-google-fonts (see screenshot: https://take.ms/CnRoGT).

Following these steps, we no longer see any issues with LCP on either mobile or desktop: https://pagespeed.web.dev/analysis/https-www-powerlab-com-pl/i3cgvqr4ol?form_factor=mobile

Additional Recommendations

1. Server Stability: Our continuous testing shows that your server performance is inconsistent. Every few page refreshes, we encounter a noticeable delay (https://take.ms/a5vZA). For reference, this is how a stable server response should look: https://take.ms/TviyW. Because the Time to First Byte (TTFB) is high (https://take.ms/qsEfR), it directly hurts your FCP and LCP scores. We strongly advise reaching out to your hosting provider regarding this.

2. Animations: We noticed that you are using entrance animations on the site. Please note that animations should never be applied to an LCP-affecting image or to the container block that holds it (https://take.ms/ZSTsb, https://take.ms/1vrPU).

Kind Regards

Hi Serg,

Thank you so much for all your hard work and for preparing such a detailed report with screenshots.
We really appreciate your help and support.

Wishing you all the best, and thank you again!

Best regards,
Irina

Hello,

Thanks again for your kind words.

We’d love to write a short article on our blog about this optimization case and include a few screenshots from your site to illustrate the steps. Do we have your permission to do so? Also, is it okay to use your real name in the article? If not, can we at least mention your website name?

Please let us know your preference.

Kind regards,
XTemos Studio

Hi Serg,

I asked the owner of the company for permission regarding this matter. Unfortunately, he does not allow the company’s name to be mentioned or screenshots of the website to be published.
At the same time, he would like to express his sincere gratitude for your help and support.

Thank you again!

Best regards,
Irina

Hi there,

No problem at all — we fully understand and respect your decision. Thank you for the kind words!

If you have a moment, we’d really appreciate a short review about the theme and our support here: https://www.trustpilot.com/review/xtemos.com

Kind regards,
XTemos Studio

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