Network speed monitoring on laptops

Wi-Fi roaming: moving away from the router lowers speed.
Power saving: battery saver can reduce Wi-Fi performance.
Docking stations: may add another adapter; make sure the monitor follows the one you use ( adapter selection ).

Laptop-specific things to know when watching network speed.

Laptops switch between Wi-Fi and Ethernet, sleep, and change power modes, all of which affect network readings.