title: How to draw more than 50 google charts on the same page without freezing browser after live update
body: <p>Data is updated live with socket.io.
  In situations where is lot of updates in the same time browser freezes for several seconds.</p>
  
  <p>I am updating data with .setValue command and then redraw chart with .draw.</p>
  
  <p>Every chart has the same structure with different data...</p>
  
  <pre><code>data.addRows([
              [5,   null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [10,  null, null, 1, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, 1, null, null, null],
              [15,  null, null, 1, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, 1, null, null, null],
              [20,  null, null, 1, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, 1, null, null, null],
              [25,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [30,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [35,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [40,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [45,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [50,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [55,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [60,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],   
              [65,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [70,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [75,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [80,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [85,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null],
              [90,  null, null, null, null, null, 'stroke-width: 0;', null, 'stroke-width: 0;', null, null, null, null, null, null]
            ]);
  </code></pre>