Receiving API frames (802.15.4) XBEE3 from Python is too slow

I have recently purchased Digi Xbee3 zigbee mesh kit. I am using two of the Xbee devices(Sender and Receiver) with firmware: Digi Xbee3 802.15.4 (latest). Done all initial configuration and checked throughput/range test/sending-receiving API frames from console of XCTU(version 6.5.12) everything is working fine.

Now I want to do some test where I send API frames from Sender to Receiver for 1 minute and get throughput / RSSI / packet lost values. To do so I am trying to use a python script by using python digi xbee libraries.

First, I sent a frame from Sender by using Python, I have confirmed that the frame is correctly received and decoded from the XCTU console (the transfer/receive rate also seems to be fine). I am also able to receive by using Python script.but it is too slow when read_data() is used to read the data. The transmitter send all frames on time, but receiver is unable to cope up with the rate and does not display the output fast enough.

I am including the Python codes below for transmitter and receiver here. Please let me know if I am doing any mistake / a way to fix this.


import time
from digi.xbee.devices import XBeeDevice, RemoteXBeeDevice, XBee64BitAddress, XBeeMessage

SERIAL_PORT = '/dev/tty.usbserial-AB0OO9Y6'
BAUD_RATE = 9600

transmitter = XBeeDevice(SERIAL_PORT, BAUD_RATE)
print("Current timeout: %d seconds" %transmitter.get_sync_ops_timeout())

	destination_address = RemoteXBeeDevice(transmitter, XBee64BitAddress.from_hex_string("13A2004201081B"))
	payload_data = b"Hi ! Communicating over 802.15.4"
	transmission_interval = 0.5 # sec

	print("Transmitting data...")
	start_time = time.time()
	transmitted_packets = 0

	while time.time() - start_time < 30:
		transmitter.send_data(destination_address, payload_data)
		print('Message is sent')
		transmitted_packets += 1
	print("Transmission completed.")
	print("Total transmitted packets:", transmitted_packets)

except Exception as e:
	print("Error:", str(e))

    # Close the connection


import time
from digi.xbee.devices import XBeeDevice, RemoteXBeeDevice, XBee64BitAddress

SERIAL_PORT = '/dev/tty.usbserial-AB0OPIU8'
BAUD_RATE = 9600

receiver = XBeeDevice(SERIAL_PORT, BAUD_RATE)

	payload_size = len(b"Hi ! Communicating over 802.15.4")

	print("Receiving data...")
	start_time = time.time()
	received_packets = 0
	lost_packets = 0
	total_bytes_received = 0

	while time.time() - start_time < 60:
		xbee_message = receiver.read_data(timeout=6)
		# print(xbee_message)

		if xbee_message:
			received_packets += 1

			payload_data =


Thank you

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