Hi Alex,
In the Receiver side, I tested with Serial communication instead Ethernet communication for sending the received Packets from Receiver board to PC. I set baud rate to 115200. With this baud rate, 80 byte transmission takes 6.9ms only. However, Still I see Packet loss that is same Ethernet communication when I connect two transmitter boards to Receiver. In the attached serial port excel log, in the packets per sec for two boards column, you can see 2,3,4,5,6,7,8,9 and 10 packets per second . What we have expected was 10 packets per seconds.
Thanks,
Muthu