I had the same problem with a MSI GF65.
I had an Intel AX201, which is basically the same device as the intel killer wifi card on the GS65.
I battled with the issue for a very long time. It came from Windows and only from Windows. You have to disable fastboot and there is a way to shut it down “fully” which you have to do.
If that does not solve it your only way out of it is to reinstall Windows.
If you’ll be using it in a shop, as a tool and that Debian works well. Well… stick with Debian !