diff --git a/dmi.py b/dmi.py
index bc72266..d8db867 100644
--- a/dmi.py
+++ b/dmi.py
@@ -35,6 +35,8 @@ def main():
             buf_sdr.start()
             try:
                 throttle = 0
+                throttle_factor = 8
+                position_acc = 0.0
                 while True:
                     buffers = buf_sdr.get()
                     try:
@@ -43,7 +45,7 @@ def main():
                         # Throttle certain things to avoid overflows due to the limited speed of
                         # the MHS5200A serial interface and GUI plotting.
                         throttle += 1
-                        if throttle == 8:
+                        if throttle == throttle_factor:
                             throttle = 0
 
                         if throttle == 0:
@@ -52,10 +54,13 @@ def main():
 
                         if stabilizer.locked():
                             position = position_tracker.input(samples_ref, samples_meas)
+                            position_acc += np.sum(position)/len(position)
                             if throttle == 0:
-                                gui.update_position(np.sum(position)/len(position))
+                                gui.update_position(position_acc/throttle_factor)
+                                position_acc = 0.0
                         else:
                             position_tracker.reset()
+                            position_acc = 0.0
                     finally:
                         buf_sdr.dispose(buffers)
             finally: