Hello! Thank you for your welcoming!
I’ve tried out your solution and it indeed didn’t work unfortunately, but now I can confidently state that the internet disconnection always comes from if something intensive is going on. For example, when starting VRChat with Envision, it automatically got disconnected from the stress, but to my surprise, this may be an issue on Windows as well, since my SteamVR got crashed and while troubleshooting it, the internet was non-existent.
It seems this guy have also been in trouble with internet disconnections, and his fault was his ethernet cable. I’m gonna check upon it.