1. speedtest-cli or https://www.speedtest.net/
Download at https://iperf.fr/iperf-download.php.
Can test the network connectivity speed in between 2 host or source/destination.
iperf3 -c x.x.x.x -V -t 10
Replace x.x.x.x with server IP
Based on above test, the connection bandwidth speed in between these 2 host can hit up to 50Mbps.