By deafult use multithreaded RMG

config/randomMap.json

@@ -41,5 +41,6 @@
   {
     "value" : [2000, 5333, 8666, 12000],
     "rewardValue" : [5000, 10000, 15000, 20000]
-  }
+  },
+  "singleThread" : false
 }