Platform & hardware limitations
Link-Speed not supported
This depends heavily on your hardware, basically the Wi-Fi adapter driver does not always report the actual throughput (what is necessary for the Link-Speed to work). I got this info from a Microsoft developer in the network team who came across my app and contacted me about this.
My app has nothing to do with this, so there is nothing I can do to fix it... this is hardware or driver related!
For Desktop/Laptops/Tablets, I know of these two (which I bought based on feedback and I can confirm that they work also on my systems but please don’t make me responsible if it doesn’t because there could be a lot of factors involved here):
ASUS USB-N10 Nano (N150) * [I used the driver from the ASUS website]
And make sure you buy these exact models, because any other may not work.
* Affiliate-Link: I earn from qualifying purchases at no additional cost to you!
Channel bandwidth not supported
This is a huge limitation, but the Windows 10/11 UWP apps currently can’t detect the channel bandwidth because the necessary API's (Application Programming Interface) are not available.
Microsoft has to implement this in order to make it work…
Wi-Fi Band Detection not supported
Because of a missing API (Application Programming Interface) it is not possible to detect whether a Wi-Fi adapter is capable of a certain band so I could prevent the user of switching to it.
For example if your adapter is not capable of 5 GHz (and there are many out there which are not), then I would have preferred not to give the user the choice to switch to a band which is not supported because it won’t find any networks anyway.