diff --git a/client_sw/matrixsimulator.py b/client_sw/matrixsimulator.py
index cb11b15..45fefbd 100644
--- a/client_sw/matrixsimulator.py
+++ b/client_sw/matrixsimulator.py
@@ -31,6 +31,7 @@ class FlipdotSim():
         self.udpHostSocket.bind(("", self.udpPort))
 
         self.timesincelastpacket=time.time()
+        self.timelastcalculation=0
 
     def run(self):
         self.RunServer()
@@ -49,7 +50,7 @@ class FlipdotSim():
 
                 imageArray = ImageArrayAdapter().convertPacketToImageArray(rawData)
                 if DEBUG:
-                    print("Received Data. Time since last message: "+str( round( time.time()-self.timesincelastpacket,2))+"s ("+str( round( (1/ (time.time()-self.timesincelastpacket) ) ,2) ) +" FPS)")
+                    print("Received Data. Time since last message: "+str( round( time.time()-self.timesincelastpacket,2))+"s ("+str( round( (1/ (time.time()-self.timesincelastpacket) ) ,2) ) +" FPS), last calctime="+str(round( (self.timelastcalculation) ,2)))
                 self.timesincelastpacket=time.time()
                 _bitsneeded=self.imageSize[0]*self.imageSize[1]*self.bitsperpixel
                 if len(imageArray) < _bitsneeded:
@@ -67,6 +68,8 @@ class FlipdotSim():
 
                 self.flipdotMatrixSimulatorWidget.show(imageArray) #send to simulator display
 
+                self.timelastcalculation=time.time()-self.timesincelastpacket #calculate time it took for calculation and drawing
+
         finally:
             self.udpHostSocket.close()