Android specific Konva HTML5 rect drag lag

When dragging a rect created with Konva the shape lags badly after the touch position. This only occurs on Android; the web and iOS versions are really good. To replicate in its simplest form:

  1. ionic start myApp blank
  2. Add a reference to konva in index.html before app.js.
    <script src=“https://cdn.rawgit.com/konvajs/konva/1.0.3/konva.min.js”> </script>
  3. Add canvas div to the index.html ion-content
    <div id=“canvas”></div>
  4. Instantiate the canvas, layer and rect in the ionicPlatform.ready function:
    var _stage = new Konva.Stage({
      container: 'canvas',
      width: 1000, height: 1000
    });
    var _layer = new Konva.Layer();
    var _rect = new Konva.Rect({
        x: 100, y: 100, width: 100, height: 100,
        fill: '#090',
        draggable: true
    });
    _layer.add(_rect);
    _stage.add(_layer);