HTML high res support

Hello,

I have a simple app:

The rendered HTML is not displaying in high resolution and text looks pixelated.

<?xml version="1.0"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark"
   xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="1280" minHeight="800">
  <mx:HTML id="html" location="http://www.cnn.com" height="100%" width="100%"/>
</s:WindowedApplication>

I tried adding <requestedDisplayResolution>high</requestedDisplayResolution> but no change.

Is there anything else to do to support High res in the mx:HTML component ?

If I add a button with text that is rendered with correct high resolution.

Thanks