title: Load map using MapView very caton
body: <p>When I load map using Mapview, map can be shown,but when operate the map, it is very caton. it is very smoothly when load map with <code>SupportMapFragment</code>. this is my code:</p>
  
  <pre><code> private void initialize() {
      setContentView(R.layout.activity_main);
      boolean success = com.here.android.mpa.common.MapSettings.setIsolatedDiskCacheRootPath(
              getApplicationContext().getExternalFilesDir(null) + File.separator + ".here-maps",
              "com.here.android.tutorial.MapService");
  
      if (!success) {
          Toast.makeText(getApplicationContext(), "Unable to set isolated disk cache path.", Toast.LENGTH_LONG);
      } else {
          final MapView mapView = findViewById(R.id.mapview);
          mapView.setVisibility(View.VISIBLE);
          ApplicationContext context = new ApplicationContext(this);
          MapEngine.getInstance().init(context, new OnEngineInitListener() {
              @Override
              public void onEngineInitializationCompleted(Error error) {
                  Map map = new Map();
                  mapView.setMap(map);
              }
          });
      }      
  }
  </code></pre>
  
  <p>some one who can help me?</p>