title: ui-grid: how does virtualizationThreshold work?
body: <p>Currently, the docs for <code>virtualizationThreshold</code> state:</p>
  
  <p><code>Turn virtualization on when number of data elements goes over this number, defaults to 20</code></p>
  
  <p>Does this actually mean that the virtualization engine is completely disabled if the grid has less rows than the threshold, or that it will virtualize any columns that exceed it?</p>