The problem really lies with Broadcom and its proprietary driver. Do you wonder what Broadcom provided ASUS so ASUS could produce a branded driver that ultimately was screwed up? Consider that in the end, Broadcom won't directly provide to you a proper
driver for their own chipset -- you have to depend on a third party to get that. And Microsoft has a process for validating that a driver works properly with Windows -- and Broadcom isn't doing any of that dancing even though Windows is responsible for 90%
of the chipset sales associated with BCM4708A/BCM4360 parts. Of course, Broadcom probably could care less given that cellphones and tablets are the up and coming market.
As for me, I did three things after the "PCI Lock" fix didn't work: (A) I uninstalled the AC68U and (B) installed an AC88U in its place. I then (C) took the discarded AC68U and installed it into a Linux box running Fedora 28, where there's an open source
driver which works just fine with it.
I did the Broadcom driver search at Broadcom and came up short. I really don't think they want that driver source being handled by techies, because it would allow discovery of what are the advantages and shortcomings of the associated chipset.
That said, good luck with the drivers you found. I didn't take your path because of the possibility of injection of malware into the drivers by third parties.