Internet Connection Issue

Lots of connection issues since update , it affected lots of routers , mostly isp issued gateways ....

What Country/State/Province do you live in?

Modem brand & model number:

Router brand & model number:

How many Xbox 360 and Xbox One consoles are connected to this router?:

Wired or Wireless (for each console):

Things you have tried:

Is UPnP Enabled? Yes/No/Unknown:

Do you have a NAT error? If so, what is your NAT type?:

Any Error Codes you encounter:

Who is your ISP? (Internet Service Provider):

I tried to use the wireless connection but the issue was not resolved. i iilso tried to switch the modem off for 5 minutes, switch off the x box one s by pressing the xbox button on the consolle for 10 sexonds, than connect via cable the modem to the consolle,
switch them both. I had no result. I don't know if should I change something in the settings of the modem, but I think it would be strange. I don't know how to go on, I would just be able to play with the console which I waited so long.

I really hope you can help me

Try performing a hard reset EXACTLY like this.

Hold the power button on the console for 8 seconds or until the power shuts down completely. Unplug the power cord from the back of the console for 5 minutes. Plug the power cord back in and restart the console.

The speed of your internet can cause these type of issues if the demand for the game is higher than the circuit can handle.

That's odd for sure. Try going through the steps on this support link for network connections and see if it helps: https://support.xbox.com/en-US/xbox-one/networking/connection-solution

Thanks but I have already gone through all those options with no result