title: How to improve the fill rate when using the `Flatlist` component?
body: <p>In the RN doc <code>Flatlist</code> unit.There is a description:</p>
  
  <blockquote>
    <p>In order to constrain memory and enable smooth scrolling, content is rendered asynchronously offscreen. This means it's possible to scroll faster than the fill rate and momentarily see blank content. This is a tradeoff that can be adjusted to suit the needs of each application, and we are working on improving it behind the scenes.</p>
  </blockquote>
  
  <p>I face the issue, sometimes the blank content show. 
  How to improve the fill rate　when using the <code>Flatlist</code> component?</p>