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Improve Lighthouse performance score to 90+ #4

Description

Problem

Our Lighthouse score on mobile is currently 72. We'd like it to be 90+.

Suggested fixes

  • Defer non-critical CSS.
  • Reduce DOM size (currently re-rendering the entire list on every change).
  • Preconnect to the avatar CDN.

Acceptance criteria

  • Lighthouse mobile performance ≥ 90 on a 4G throttled test
  • No regressions in accessibility / best-practices scores

A bounty has been opened for this issue on CodeBounty.

Activity

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