I understand you are having problems with the Wireless adapter on your NUC so let me help you with this.
Since the wireless card is being recognized at the Operating System level there may be a software issues so I first want you to install the latest driver for the adapter. Here is the latest one:
If you re still having problems, for troubleshooting steps, can you try installing a previous version? Here you can download the version:
I am not sure what BIOS you have installed so, try updating it to latest. Here is the download link:
I followed the steps you outlined above, and there was no change whatsoever.
Any ideas on what to try next?
Did you try doing this while having the Wireless card disconnected? Is there any way to test the card into another system?