title: Store Kit in-app purchases notification slow
body: <p>I have followed an example tutorial online for integrating in-app purchases in to my app. It is all working fine purchasing and unlocking the extra content. However, the notification that gets posted for confirming the purchase can take from 4-9 seconds to appear. This does not make for a very consistent user experience and makes the app appear slow.</p>
  
  <p>Has anyone else had the same problem as this or know of a fix for it?</p>