diff --git a/oml/nodes.py b/oml/nodes.py
index 3e4c575..27d7658 100644
--- a/oml/nodes.py
+++ b/oml/nodes.py
@@ -70,6 +70,8 @@ class Node(Thread):
                 else:
                     if not self._q.qsize():
                         time.sleep(5)
+                    else:
+                        time.sleep(0.1)
                     self.queue(action[0], *action[1])
             else:
                 logger.debug('unknown action %s', action)
@@ -83,7 +85,8 @@ class Node(Thread):
             self._q.put('ping')
 
     def queue(self, action, *args):
-        logger.debug('queue node action %s->%s%s', self.user_id, action, args)
+        if DEBUG_NODES:
+            logger.debug('queue node action %s->%s%s', self.user_id, action, args)
         self._q.put([action, args])
 
     def _call(self, action, *args):