Hi Sokal88, so that we can take a closer look at how your modem is functioning on the Cox network when no other devices are present, please bypass your router temporarily and connect your modem directly to a one of your devices with an ethernet cord. Reset the modem by unplugging the power for 30 seconds and then plugging it back in. Then, follow the steps listed in the article at
bit.ly/HowToRunCoxSpdTest and run the Cox Speed Test a few times. When complete, let us know so we can review your results. We can use this data as a springboard to further investigate what is happening. I want you to get the speed of the internet tier that you pay for! -Becky, Cox Support Forums Moderator