title: Future builder with page transition cause lag
body: <p>I have some troubles in my applications since I'm using different animated widget in combination of Future Builder (I think this is the problem).</p>
  <p>For example when I perform a navigation to another page and in this page I retrieve data with future builder, the page transitions lag. This is an example:</p>
  <img src="https://i.stack.imgur.com/JioQ8.gif" width="216" height="400" alt="Babou" title="My Patou">
  <p>As you can see the animation is lagging at the end. But I'm not sure that is a problem with Future Builder and the transitions.</p>
  <p>This example was made on a release application on iOS, so not in debug mode.</p>