problems encountered using python api "simSetVehiclePose"

[DarkKnightCyd]

I use api "simSetVehiclePose" to spawn the drone at certain position .It seems that the drone cannot reach to given pose after the function was called.To evaluate this, I wrote a while loop to find out ,here's the code:
while True:
self.drone.simSetVehiclePose(pose, False, self.drone_name)
time.sleep(1)
s_now=self.drone.simGetVehiclePose(self.drone_name)
col =self.drone.simGetCollisionInfo(self.drone_name)
if col.has_collided:
break
if np.linalg.norm(s_now.position.to_numpy_array() - pose.position.to_numpy_array()) < 1.e-2 and \ np.linalg.norm(s_now.orientation.to_numpy_array() - pose.orientation.to_numpy_array()) < 1.e-2:
break
i += 1
print(i)
And it turns out that it takes serveral times to get drone to given pose.And here's my settings.json:
{
"SeeDocsAt": "https://github.com/Microsoft/AirSim/blob/master/docs/settings.md",
"SettingsVersion": 1.2,
"SimMode": "Multirotor",
"PhysicsEngineName": "ExternalPhysicsEngine",
"ClockSpeed":1,
"Vehicles": {
"Drone1": {
"VehicleType": "simpleflight",

	    "AutoCreate": true,
	    "Sensors": {
	        "LidarSensor1": {
	            "SensorType": 6,
	            "Enabled" : true,
	            "Range":3,
	            "NumberOfChannels": 72,
	            "RotationsPerSecond": 80,
	            "PointsPerSecond": 100000,
	            "X": 0, "Y": 0, "Z": -1,
	            "Roll": 0, "Pitch": 0, "Yaw" : 0,
	            "VerticalFOVUpper": 50,
	            "VerticalFOVLower": -55,
	            "HorizontalFOVStart": -20,
	            "HorizontalFOVEnd": 20,
	            "DrawDebugPoints": false,
	            "DataFrame": "VehicleInertialFrame"
	        }
	       
	        
	    },
        "Cameras" : {
            "my_dep1": {
                "CaptureSettings" : [
                    {
                        "ImageType" : 2,
                        "Width" : 1280,
                        "Height" : 720
                        	
                    }
                ],
                "X": 0.3, "Y": 0.0, "Z": -0.30,
                "Pitch": 0.0, "Roll": 0.0, "Yaw": 0.0
            },
            "my_dep2": {
                "CaptureSettings" : [
                    {
                        "ImageType" : 1,
                        "Width" : 256,
                        "Height" : 144
                        	
                    }
                ],
                "X": 0.3, "Y": 0.0, "Z": -0.30,
                "Pitch": 0.0, "Roll": 0.0, "Yaw": 0.0
            	}
    		}

		}

}

}

Can anyone help with this issue? Thanks a lot!