It's likely that the update failed and Windows tried to install the driver from WU which is a DCH one with WinStore CPL these days. Happened to me a couple of times.
Uninstall anything related to NV driver from Apps, download DDU, disable network adapter, reboot into safe mode, clean with DDU, reboot, run the 440.20 installer again, enable network adapter. Isn't it just great when MS just silently install stuff in Windows 10?
Or, as others said, you've downloaded the DCH installer in the first place.
Ah this looks like it, shortly after it said they were installed, I started up a game, and the screen flickered with the device connected sound. Checking the driver version its way off the one I thought GFE installed. That explains it, thanks :)