title: UIButton background image not crisp
body: <p>I'm setting the background image of a UIButton in Interface Builder.
  For some reason this image doesn't render well and I end up with something not crisp at all.
  The button is 65x65 and the image is 302x302 and has an '@2x' version.</p>
  
  <p><img src="https://i.stack.imgur.com/66Irx.png" alt="screenshot of the blurry image I get in the simulator">
  <em>screenshot of the blurry image I get in the simulator</em></p>
  
  <p>Any idea on what I should do to solve this issue?
  Thanks</p>