title: Multiselect dropdown search is very slow with large data
body: <p>Hi i am using multiselect dropdown, using select2 jquery 4.0.3
  i am getting data using Viewbag and loading around 9000 data in viewbag below is the dropdown</p>
  
  <pre><code>@Html.DropDownListFor(m =&gt; m.Tags, ViewBag.tags1 as IEnumerable&lt;SelectListItem&gt; , "----Select tags----", new { @class = "Tags form-control", multiple = "multiple", @id = "Tags" })
  
  &lt;script&gt;
      $(document).ready(function () {
          $("#Tags").select2({
              placeholder: "Select Tags",
              minimumInputLength: 3,
              tags: true
          })
       });
  &lt;/script&gt;
  </code></pre>
  
  <p><code>ViewBag.tags1</code> contains my data , now my page load perfectly but while searching (type required data in dropdown search box) dropdown reacts very very slow. </p>
  
  <p>It feels like system has got hanged, any action in that search box is very slow.</p>
  
  <p>Any solution for this?
  Need help.</p>