[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).


invariant(
          nextEffect !== null,
          'Should have next effect. This error is likely caused by a bug ' +
            'in React. Please file an issue.',
        );
        onCommitPhaseError(nextEffect, error);
        if (nextEffect !== null) {
          nextEffect = nextEffect.nextEffect;
        }
      }
    }
    isCommitting = false;
    isWorking = false;
    stopCommitLifeCyclesTimer();
    stopCommitTimer();
    if (typeof onCommitRoot === 'function') {
      onCommitRoot(finishedWork.stateNode);
    }
    if (__DEV__ && ReactFiberInstrumentation.debugTool) {
      ReactFiberInstrumentation.debugTool.onCommitWork(finishedWork);
    }
    const remainingTime = root.current.expirationTime;
    if (remainingTime === NoWork) {
      
      
      legacyErrorBoundariesThatAlreadyFailed = null;
    }
    return remainingTime;
  }
  function resetExpirationTime(