title: Image asset loading too slow
body: <p>I have noticed a problem where image asset loading is too slow to be useable.</p>
  
  <p>In this simple example (below) when the image is loaded you can see an initial screen and then the image asset loads and appears on the screen.</p>
  
  <p>I was expecting to see everything drawn in one go rather than seeing the asset being loaded</p>
  
  <pre><code>  Widget build(BuildContext context) {
      return Scaffold(
        body: Stack(
          children: [
            Positioned.fill(child: Image.asset(imagePaths[6], fit: BoxFit.cover)),
          ]
      )
      );
    }
  </code></pre>
  
  <p>Any idea what i can do to make these images load faster?
  Even in release build its loading the asset so slow the user can see it</p>