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PERFORMANCE

How We Achieved Sub-0.8s LCP Across 12 Client Enterprise Platforms

Eliminating render-blocking payloads, self-hosting font subsets, and prioritizing DOM streaming execution.

DE
DevaNest Engineering
· 6 min read

Measure first

We baseline every template with field data (CrUX) and lab data (Lighthouse) before touching code.

The highest-impact fixes

  • Self-hosted, subset variable fonts with font-display: swap and size-adjust fallbacks.
  • Priority hints on the LCP image and responsive AVIF/WebP sources.
  • Streaming server rendering so meaningful HTML arrives in the first bytes.
  • Removing third-party scripts from the critical path.

Applied consistently, these changes brought LCP under 0.8 seconds on every platform we measured.

#Core Web Vitals#Next.js
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