XPS wifi issues

When I bought this XPS 15" 7590, I thought I was buying a machine for pros, but the number of unsolved (in over 2 years) issues makes this machine unusable even for a 10-yo child.

In the flat where I am now, among five PCs I am the only one who cannot use internet. This laptop with an updated Win 10 Pro (and all the drivers, support tools up-to-date) disconnects very very, too often. Have a look at the pictures: the driver is flawed.

The driver keeps disconnecting from the network. This behaviour does not always take place, but with many home network I am simply not able to work on-line. Even writing this message took minutes, see the screenshot with the captcha.

I have tried plenty of solutions, uninstallations, installations, but, with many other problems of this overexpensive laptop (disappearing hard drive, freezing touchpad, continuous blue screens of death), nothing actually works.

Is there any of you users who was able to solve or partially solve this annoying problem? I kindly ask Dell support NOT to answer this post since their solutions are always a complete waste of time.