Problems with my r3

[mnem0nem]

Hello everyone At what exact moment it happened, I can't say for sure. But there was a problem. My router is not working correctly. During the initial setup, it shows that the Internet is not connected, although the cable is plugged in and the Internet is there, since the computer is connected to the router by a cable. If you turn off the cable for a while and activate the router without it. A menu appears. Where it is visible that the Internet is working, but the router still thinks that it is not there. The list of games also stopped working when checking ping, plus packet loss appeared in the games and the ping increased. I temporarily used an old router with the same internet, and everything was fine. Sorry for the long text(

[mnem0nem]

I reset it to factory settings. I did a downgrade and updated it to the latest firmware. The result is the same.