Question Slow ethernet connection

Mar 27, 2019
I have 5 desktops and 2 laptops on a network. They all run through a Internet switch. My desktops run great on ethernet connections. The two laptops do not, however they have great speed on a wireless connection. I hooked up the laptop to the same ethernet cable that a desktop is running on and I have the same results. Why would the laptop run twice as fast wireless than on ethernet?