I performed a test in which I transferred a file of 1GB by opening a tcp port on destination server with MTU 1000.
then I tried to change the MTU from 1000 to 9000 and the total time duration of 1GB file transfer from source to destination server was same. I tried the same process of 5GB file size and difference in time was negligible. Not sure if this could be different for bigger file size(100GB)
I can confirm that max MTU is supported from both of my server(source and destination support MTU 9001)
Any suggestion please.