So, for clarification, have Microsoft accepted that the driver "Broadcom - Net - 7.77.110.0" currently being pushed on users through Windows Update is defective ? If so, what is the timeline for reverting back to the previous driver or, better yet, providing
an updated driver which is not defective ?
I have wasted many hours trying to fix this problem, after the automatic update of the driver through Windows Update left me with a wifi connection that at best could only manage sub 1Mbps speeds and mostly was unable to load any web pages at all - utterly
unusable. I am attempting to connect to a Virgin Media Hub 3, so this is definitely not a problem just with Ubiquiti routers only.
I have tried various different drivers from various sources, to replace the defective driver that was pushed, almost all of them leave the Broadcom 802.11ac Network Adapter device unable to start (error code 10).
Eventually, I was able to get a usable wifi connection short term, with a driver at level 7.35.118.64, following the instructions here - https://discussions.apple.com/thread/250863937.
However, instead of using my preferred 5Ghz signal, I have to use the 2.4Ghz signal - no connection can be made using the 5Ghz signal. Worse, the wifi connection speed also drops to (and remains at) 1Mbps speed after a period of time or following a wake from
sleep. The "Allow the computer to turn off this device to save power" setting under Broadcom 802.11ac Network Adapter Properties - Power Management is unchecked. The setting Power Options - Advanced settings - Wireless Adapter Settings - Power Saving Mode
is set to Maximum Performance also. Sometimes, disabling and re-enabling the Broadcom 802.11ac Network Adapter device will fix the problem, until the next time it occurs. Other times, I am forced to go through the instructions at https://discussions.apple.com/thread/250863937
again. This is obviously unacceptable.
It certainly looks like the testing of the 7.77.110.0 driver currently being pushed by Windows Update was lacking at best. Hopefully this unfortunate situation can be resolved swiftly.