title: WPF listview / gridview performance horrible, suggestions
body: <p>I have a window using a WPF ListView/GridView bound to an ObservableCollection. The performance is utterly horrific. The application chokes trying to load 300-400 items and CPU usage spikes each time an item is added/removed/modified. Profiling doesn't reveal anything obvious.</p>
  
  <p>Anyone have any suggestions?</p>