Have you tried it by any app?
Topic summary
Slow loading on a Vivid theme store, especially on mobile, with audits showing high LCP (Largest Contentful Paint: time to render the main content) and TBT (Total Blocking Time: time the main thread is blocked by scripts). Screenshots indicate low scores and heavy third‑party app impact.
Key causes identified:
- Unused/legacy third‑party app code increasing request count and size.
- Large images and suboptimal lazy loading affecting LCP.
- Heavy JavaScript, long main‑thread tasks, and unused CSS/JS.
Recommended actions (from replies):
- Remove unused app code; limit third‑party JS and apps.
- Compress/resize images; defer off‑screen images; implement proper lazy loading (lazyload + data-src) and consider Critical CSS.
- Reduce JS payload; code split; minimize main‑thread work; clean unused CSS/JS; migrate trackers to Google Tag Manager.
- Optimize fonts (system fonts or preload; use font-display: swap). Consider a theme upgrade.
Latest update: After applying suggestions, some functionality broke; the requester asked for practical, step‑by‑step guidance. Another participant suggested video tutorials or hiring a speed optimization expert. No resolution yet; screenshots/audit images are central to understanding the issues.