title: Slow scroll on UITableView images
body: <p>I'm displaying lots of images loaded directly from my app (not downloaded). My table view is slow when I scroll it the first time. It becomes smooth after all my cell has been displayed. I don't really know why.</p>
  
  <p>I have an array of UIImage that I'm loading in the viewDidLoad. Then in my tableview delegate I just get the image at a given index path and set it to an UIImageView of my cell.</p>
  
  <p>Do you know how I can improve performances ?</p>