Overview
src/components/social/FollowingSystem.tsx:70 recomputes users.filter(...).toLowerCase() on every keystroke and render with no useMemo or debounce, and the filtered list at line 117 is rendered unvirtualized, so large follower lists re-filter and fully re-render on each character typed. Debounce the query and memoize the filtered result.
Overview
src/components/social/FollowingSystem.tsx:70 recomputes users.filter(...).toLowerCase() on every keystroke and render with no useMemo or debounce, and the filtered list at line 117 is rendered unvirtualized, so large follower lists re-filter and fully re-render on each character typed. Debounce the query and memoize the filtered result.