I'm using ng-file-upload as documented

```
 <input type="file"
      name="file"
      accept="image/*"
      ngf-max-size="5MB"
      ngf-select="uploadFile($file, form)"
      class="form-control">

```

However, sometimes it takes very long time to open the file dialogue.

Though it never fails, 30s waiting is beyond acceptable.

Has anyone met this before, is there any way to fix this?