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Critical mobile performance issues on PageSpeed Insights (Render-blocking resources)

lukabp · 2026-11-05T10:51:06+00:00

Hello, I am reaching out regarding severe mobile performance issues on my WooCommerce store shop page (lumiline.rs/prodavnica), which is using the XStore theme. Currently, our mobile score on Google PageSpeed Insights is very low (around 34/100). The First Contentful Paint (FCP) and Largest Contentful Paint (LCP) are both around 6.4 seconds, and we are experiencing a high Cumulative Layout Shift (CLS of 0.647). We have already implemented standard optimization practices, including LiteSpeed Cache and Cloudflare, but they did not resolve the issue. Our developer reviewed the PageSpeed diagnostics and identified that the main bottleneck is a massive amount of "Render-blocking resources" (delaying the load by over 2,000 ms). It appears that the XStore WooCommerce widgets (especially on the Shop archive and Single Product pages) are loading excessive CSS and JavaScript files before the browser can even begin rendering the page. Could you please check our site and advise if there are specific settings, built-in optimizations, or hooks within the XStore theme to defer these assets and reduce the render-blocking load?

This topic has 2 replies, 2 voices, and was last updated 5 hours, 42 minutes ago ago by Jack Richardson

lukabp

Participant

November 5, 2026 at 11:51

Hello,

I am reaching out regarding severe mobile performance issues on my WooCommerce store shop page (lumiline.rs/prodavnica), which is using the XStore theme.

Currently, our mobile score on Google PageSpeed Insights is very low (around 34/100). The First Contentful Paint (FCP) and Largest Contentful Paint (LCP) are both around 6.4 seconds, and we are experiencing a high Cumulative Layout Shift (CLS of 0.647).

We have already implemented standard optimization practices, including LiteSpeed Cache and Cloudflare, but they did not resolve the issue.

Our developer reviewed the PageSpeed diagnostics and identified that the main bottleneck is a massive amount of “Render-blocking resources” (delaying the load by over 2,000 ms). It appears that the XStore WooCommerce widgets (especially on the Shop archive and Single Product pages) are loading excessive CSS and JavaScript files before the browser can even begin rendering the page.

Could you please check our site and advise if there are specific settings, built-in optimizations, or hooks within the XStore theme to defer these assets and reduce the render-blocking load?

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1 Answer

Jack Richardson

Support staff

November 5, 2026 at 15:38

Hello,

Hello @lukabp,

I hope this message finds you well. I would like to bring to your attention that your website is currently inaccessible for viewing or source checking, as indicated by this link: https://gyazo.com/6f940f973984b80e9ada236dc0bcb59c. Please be advised that our support policy does not cover additional customization on customers’ websites. However, we are able to review your website’s sources and provide suggestions for improvement. To proceed, we require access to your website, which is currently displaying a 403 error page.

In the meantime, we recommend reviewing our documentation on improving speed, available here: https://www.8theme.com/documentation/xstore/troubleshooting/the-ultimate-2025-guide-to-boosting-wordpress-speed-with-xstore-theme/.

Additionally, you may want to explore our new service for optimal speed performance and optimizations at https://flashmax.8theme.com/.

Best Regards,
Jack Richardson
The 8Theme’s Team

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