How can I fix poor mobile LCP and INP scores on Wix Studio Editor, even after optimising images and removing heavy content?

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Wix Studio Editor

I’m trying to improve my Core Web Vitals, especially on mobile. My site’s Largest Contentful Paint (LCP) is around 5.8s, and Interaction to Next Paint (INP) is 1,800ms, which is marked as poor. I want the site to load quickly and respond quickly, especially the homepage.

I have you already tried:
All images are in AVIF format, under 100 KB each.
No animations, no video backgrounds, no pop-ups.
No external fonts — only default Wix fonts.

  • LCP: 5.8s (Mobile)
  • INP: 1,848ms
  • FCP: 2.6s
  • Speed Index: 18.1s
  • Mobile Performance Score: 43 (from PageSpeed Insights)
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