OK, that rules out an Intel Killer wifi issue. Potentially something in a Dell driver update?
If the hub is behaving itself with other devices, then that points the finger at Dell. VM wouldn't test every available device, because everything is supposed to use industry standards to avoid this sort of problem. The issue with Dell is that everything is designed around their process and their customised components - when it all works it is great and often excellent value, when it doesn't (eg buggy drivers) then the experience is poor, because if it isn't an officially recognised problem Dell staff will sometimes deny one exists. I've personally had driver problems for Dell stuff in the past for both sound cards and network adaptors, and then you have to deal with the situation where there's Windows default drivers, there's Dell drivers, and there's OEM (eg Qualcomm or Intel) drivers for what should be the same hardware. Even then, it's sometimes not even as easy as just installing a new driver, you often have to completely eradicate all traces of the current Dell drivers, then do a new install of either Windows or OEM drivers, and if that works then you need to make sure that neither Dell or Windows automatically overwrite the working driver. For me, Dell used to be an obvious go-to recommendation, but for years now I've found better value and more reliable performance either building my own desktops, or specifying all components for a system builder like Scan. Which sadly doesn't help you with your laptop.
I think you have to make this Dell's problem. Tell them to fix it, or if the laptop allows it, ask them to supply an alternative network adaptor.
