Uploaded June 2025 | Updated September 2026, 21 hours ago

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React Native slowdowns aren’t inevitable, and this talk proves it.

At React Universe Meetup SF, Oskar Kwaśniewski ( https://x.com/o_kwasniewski ) shares practical performance tactics from the Ultimate Guide to React Native Optimization 2025.

You’ll learn how to:
- Use React 19 hooks (`use`, `useOptimistic`) for smarter UI updates
- Flatten native views for faster rendering
- Optimize cryptographic tasks without JS bottlenecks
- Configure Hermes correctly to get 12% TTI wins
- Turn RN DevTools into your debugging sidekick
- Use React Compiler (no `useMemo` required)

Get your copy of the Ultimate Guide to React Native Optimization 📘 clstk.com/43JuFaN
More performance insights from Callstack 📈 clstk.com/3Zfjzch
Need help with React Native performance? We’ll help you identify what’s wrong and fix what matters—fast 💡clstk.com/4krYHHe
Follow Callstack on X 🐦 https://x.com/callstackio