Watch the video:
This is the quickest way to check the speed of your network, so you can better position devices in a wireless network, or make sure that what you paid for is what you get.
This is NOT an internet speed test, use https://speedtest.net, or something similar for that
It’s mostly accurate, though changing certain settings can get more out of your device. This is more for a broad idea of how fast it is, rather than a set in stone number.
Download LANBench: https://download.cnet.com/LANBench/3000-2085_4-10974206.html