[This example](https://codesandbox.io/s/1zn2o513pq) presents a huge performance drop between React 16.2 and React 16.3.

In investigated it and noticed several things:

- Perfomance drop is only visible using development bundle
- This is not related to styled-components (a simple div presents the same problem)
- I tried to investigate in performance tab of Chrome dev tools and I noticed that I get React measures even without "?react_perf"
- React Tree Reconciliation seems very long, do not know why

It is not a big problem for me, but it looks weird, so I decided to [share it on Twitter](https://twitter.com/neoziro/status/979756579296817154),  then @gaearon [invited me to submit an issue about it](https://twitter.com/dan_abramov/status/980036013518139398).


}
  }
  function scheduleCapture(sourceFiber, boundaryFiber, value, expirationTime) {
    
    const capturedValue = createCapturedValue(value, sourceFiber);
    const update = {
      expirationTime,
      partialState: null,
      callback: null,
      isReplace: false,
      isForced: false,
      capturedValue,
      next: null,
    };
    insertUpdateIntoFiber(boundaryFiber, update);
    scheduleWork(boundaryFiber, expirationTime);
  }
  function dispatch(
    sourceFiber: Fiber,
    value: mixed,
    expirationTime: ExpirationTime,
  ) {
    invariant(
      !isWorking || isCommitting,
      'dispatch: Cannot dispatch during the render phase.',
    );
    
    let fiber = sourceFiber.return;
    while (fiber !== null) {
      switch (fiber.tag) {