Wanna know something really odd?
In my researching I came across the teardowns on ifixit of both the 15 inch and 13 in TB models of this mac.
The angle was that if I was able to identify the specific chip I could either:
- find a better working driver from the manufacturer
- identify that there are other PC manufacturers that are having the same issue with that chipset
To my surprise iFixit lists in the 13" variant that the chipset is "Murata/Apple 339S00056 Wi-Fi Module" Not Broadcom
See link : https://www.ifixit.com/Teardown/MacBook+Pro+13-Inch+Touch+Bar+Teardown/73480
Not sure if Murata is some sub company of Broadcom or if it is a separate company completely.
When looking for the wifi module on the 15" variant, iFixit may have conveniently left it out.... I asked them why, I'm still waiting on a response. But closer inspection of the logic board shows that there is a similar looking chip in a similar configuration on the logic board for the 15" variant. (update: I just checked again, iFixit located the same model chip and updated their teardown)
Digging into the company Murata, I found a bunch of different low powered wifi all in one units that they manufacture, but have not been able to identify any additional information.
This may be why Apple chose to use such a generic Broadcom Driver as opposed to a model specific driver. It could be that apple never actually took the time to write a proper windows driver for this chipset, and just assumed it would work, because, it always did in the past more or less...
The problem only seemingly presents itself on 2.4 ghz networks when they are secure, Not when the network is open.
So perhaps I may attempt to use Mac filtering on my Wifi router and leave it open for the time being...