Can't change drivers for any of my USB wifi adapters

I've had an on-going problem as documented here:
Wifi loses connection every few hours (tested on 2 diff wifi adapters)

It sounds like a very similar problem to what many others have reported regarding wifi problems with Windows 10:
Windows 10 internet connection dead every two hours
Connection drops completely when trying to use the Internet

And there's tons more complaints like this on Google if you do a search.

I've tried many things (as suggested in those threads), and so far none have worked. What I'm trying to do now is to manually set my wifi driver to something else, but Windows 10 isn't allowing me. I have plugged in two different USB wifi adapters (one is a Rosewill, the other is a newer one by Netgear), and I have installed the manufacturer driver files that come with those adapters, but it seems Windows 10 ignores it. When I go to my
Device Manager → Network adapters → 802.11n USB Wireless LAN Card → Properties

The driver listed is this:
Driver Provider: MediaTek, Inc,
Driver Date: 6/6/2014
Driver Version: 5.1.16.0
Digital Signer: Microsoft Windows

I have tried to use the "Update Driver..." process to manually set it to manufacturer drivers. No dice. It just says "The best driver software for your device is already installed."

I also tried the "Uninstall" button to get rid of the MediaTek driver. But after I reboot the system, Windows 10 automatically installs it again.

It seems the surefire solution is to downgrade to Windows 7, but I don't want to go through that pain.

Can anyone help?

What model Adapters are you trying? Many use chips that are the same and MediaTek may be the manufacturer.

I have a Rosewill RNX-N1/N1MAC, which is about 5 yrs old, and also a Netgear a6210 (802.11ac Dual Band with High Gain Antenna) which I bought about 1 yr ago.

BTW, can you go to your Device Manager → Network adapters → 802.11n USB Wireless LAN Card → Properties and see what drivers your system has? Just curious.