Summary:
I just worked with a fellow dev who was switching to flatlist and ended up pretty surprised at the performance drop. The measurement had an exponential bridge saturation, causing flatlist to lose to a scrollview!
We knew something was up, but a little note in the docs would have helped.
Closes https://github.com/facebook/react-native/pull/15400
Differential Revision: D5579483
Pulled By: sahrens
fbshipit-source-id: 2cc2488b6332db4f4d644c67f180088d3a5874a8