Before cutting over to a new broadband or LTE link, run a WAN killer test to confirm the circuit actually delivers the bandwidth you are paying for (avoiding "over-subscribed" ISP issues).
Unlike standard ping tools that check simple connectivity, a WAN Killer allows for granular control over the data being sent to test network limits: wan killer traffic generator
Pointing a WAN killer at a corporate or ISP network without written permission is a (Computer Fraud and Abuse Act in the US). Only test your own equipment or explicitly authorized third-party circuits. Before cutting over to a new broadband or