Rendering optimization in EmberJS

I need to display about 1000 records returned by a single ajax request (No pagination) in a tabular view.

Since, there are two loops at play each for row and column, the rendering is taking too much time (about 10sec).

Using simple approach, Ember is taking too long to render view in this situation. Please suggest, what can I do to improve performance in this situation.

  
    Some content
  

Suggestions will be highly appreciated. Thank you.