title: Strange delay with touchesBegan in iOS 10
body: <p>I recently updated to iOS10 and Swift 3. And know, whenever I run my app on an iOS10 device (iPhone6s in my case) there is a randomly occurring delay of the touchesBegan function. Sometimes this is accompanied with the following error message: </p>
  
  <blockquote>
    <p>"Gesture: Failed to receive system gesture state notification before
    next touch"</p>
  </blockquote>
  
  <p>Interestingly my older iPhone5s running iOS9 does not reproduce this problem. </p>