title: High memory usage in Ionic app
body: <p>recently I have observed thath my android app uses too much of RAM.
  When i open it it takes ~~120mb and after few changes of pages it goes to 400mb.
  What can I do?</p>
  
  <p>To change page I use popover with:</p>
  
  <pre><code>        this.navCtrl.setRoot(StatisticsPage);
  </code></pre>
  
  <p>Some data from profiler:
  <a href="https://i.stack.imgur.com/fPm88.png" rel="nofollow noreferrer">link to data</a></p>