NTttcp Utility – https://github.com/microsoft/ntttcp/releases/download/v5.35/NTttcp.exe

Below are my normal settings I use. Default port is 5001.

That can be changed with the -p parameter

Receiver settings: NTttcp.exe -r -m 16,*,10.20.30.40
16 threads run on any core, receiving on IP: 10.20.30.40

Sender settings: NTttcp.exe -s -m 16,*,10.20.30.40 -t 30
16 threads run on any core, sending to IP: 10.20.30.40, for 30 seconds.