diff --git a/Tools/autotest/arducopter.py b/Tools/autotest/arducopter.py
index 270242a7cc..cc61cd1891 100644
--- a/Tools/autotest/arducopter.py
+++ b/Tools/autotest/arducopter.py
@@ -2856,7 +2856,7 @@ def CANGPSCopterMission(self):
             # flying on DroneCAN ESCs
             "SIM_CAN_SRV_MSK" : 0xFF,
             # we can do the flight faster
-            "SIM_SPEEDUP" : 5,
+            "SIM_SPEEDUP" : 3,
         })
 
         self.CopterMission()