diff --git a/keras_wrapper/dataset.py b/keras_wrapper/dataset.py
index f1db239..cef72a0 100644
--- a/keras_wrapper/dataset.py
+++ b/keras_wrapper/dataset.py
@@ -6,6 +6,7 @@
 import ntpath
 import os
 import random
+import time
 import re
 import sys
 #import threading
@@ -269,6 +270,7 @@ def generator(self):
             while out_queue.qsize() > 0:
                 data = out_queue.get()
                 yield(data)
+                time.sleep(0.1)
 
 
 class Homogeneous_Data_Batch_Generator(object):