Looking for laptop network issues help

I’m having serious trouble with a Dell Inspiron 7559 win10 computer whose network connection speed seems to drop with distance wayyy faster than it should. I’ve been trying to troubleshoot this thing for a while, changed the network adapter, reinstalled all drivers, ran the computer through with several antivirus programs but don’t seem to be able to find the issue.

Is there anyone who has time this weekend or some weekday evening willing to have a look at it with me? Or is there another place in SF you would advise me to seek help? I can share more details about what’s wrong / what I tried already. I can also offer a dinner or something if you can fix it! :slight_smile:
Sadly, it’s past warranty…