I have a fiber connection and I notice that I am not getting the speeds I pay for. I have tried three different computers running windows 7, windows 10 and Ubuntu (linux). I have switched all the networking cables and upgraded them from cat 6 to cat 7. I have switched out the router and tried three different ones. I have eliminated all points of failure on my side of the network and yet, the speeds make no sense. I am not getting the upload speed I pay for which is 250 mbit. I pay for 250 / 250 and I get 230-250 down and about 92 mbit up. When testing with a laptop or a mobile phone using the WIFI of the routers, all three routers, different brands, the upload speed is higher. A lot higher. Does anyone have any clues why wifi would give higher upload speeds than using a cable ? I've had the ISP here three different times and they witnessed it as we swapped out everything. Then they take in their own router and measure higher speeds with a different router using the wireless holding a phone 2 inches away from it. However everytime we measure with a cat 6 / cat 7 cable the speeds caps out at ~90 mbit up. I have a hypothesis: A laptop / android phone using WIFI sends the signals to the router. The router then transmits the data to the fiber modem and out on the net. Essentially the router works as a booster of kind. Whereas when the connection goes through cable, the data gets routed through the router because the data does not need to be converted from wireless signal to a bit stream. Has anyone ever noticed something as odd as this? How am I supposed to get the ISP to fix this when they say it's okay as long as wireless connection is "good" enough. Also, they removed the bandwidth restriction on the testing and the connection is supposed to be capable of 1000 mbit / 1000mbit and they capped out on 450 / 350 with their phone using wireless. Which is fair enough. However they have yet to manage to actually get the speeds the connection should be capable which is 1000 / 1000. They've meassured 1000 / ~90 with cable and 450 / 350 with wireless. Does anyone with technical experience has any input or advice here ? Can it be the fiber modem that is not capable of outputing the upload speeds ? The technicians has also measured the signal on the connection and they say it's fine.