What model router do you have? If you have a newer Panoramic gateway, you should be able to use the app to narrow down which devices are using what bandwidth. If changing your password worked, perhaps someone compromised your network. Are you using WPA2+AES and a hard to guess password?
I can't tell what router it is. I don't see anything on it that says it's Panoramic Gateway. Yes, the password should be hard to guess.
Do you use amazon alexa/echo/Dot? What about ring doorbell? Do you have a new apple or android phone or tablet, or have you installed ONEDRIVE on anything? What about using netflix?
Don't have Alexa or any smart home device, don't have any security cameras or ring doorbell. No new apple devices or android devices - the same we've alwasy had. Yes, I use Netflix but that is not a new behavior for us. I do have one drive on my computer that I installed years ago.
Did you get the router from Cox?
Yes, it says Cox on it.
