title: Geolocation very slow in OL3
body: <p>I'm trying to use the geolocation with Openlayers 3, but find it very slow.
  I've tried this example:
  <a href="http://openlayers.org/en/v3.14.1/examples/geolocation.html" rel="nofollow">http://openlayers.org/en/v3.14.1/examples/geolocation.html</a>
  but even on this example page it is very slow. </p>
  
  <p>Any idea if there is a way to improve the speed?</p>
  
  <p>Thanks!</p>