title: Android and his slow webview. Hardware accelerated is buggy
body: <p>Can someone post his experience with android webview and performance?
  My min API is >= android 4.0</p>
  
  <p>What we can do for increasing performance of webview for all users?</p>
  
  <ol>
  <li>set: android:hardwareAccelerated="true" in AndroidManifest/Application</li>
  <li>set: android:hardwareAccelerated="false" in AndroidManifest/Application</li>
  <li>setLayerType(View.LAYER_TYPE_SOFTWARE, null); on webview</li>
  <li>setLayerType(View.LAYER_TYPE_HARDWARE, null); on webview</li>
  <li>getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH); on webview</li>
  </ol>
  
  <p>but.. here goes the main problem, some of them will speed up your webview and some of them may slow it down. It depends on device/android version.</p>
  
  <p>My question is about.. is there known rules which config works on which android/device?</p>
  
  <p>Also webview with hardware acceleration may lead to unexpected disappearing dom elements from your website (for me it was fixed positioned element). How to fix it?</p>