Switched on native lazy object by default

lib/Common/EntityManagerFactory.php

@@ -43,6 +43,7 @@ class EntityManagerFactory
 
         $config = ORMSetup::createAttributeMetadataConfiguration($paths, $dev_mode, $params['proxy_dir'], $cache_adapter);
         $config->setAutoGenerateProxyClasses($dev_mode ? true : false);
+        $config->enableNativeLazyObjects(true);
 
         if ($middlewares) $config->setMiddlewares($middlewares);