It took me a lot of tinkering, but I finally managed to turn my (rather useless) WiFi chip into a Hotspot for some of my consoles which otherwise don't get any WiFi at all.
What's weird is that while the connection strength is perfect, all clients get a maximum of 5Mbps/s download (which should be over 100)... but over 20Mbps/s of upload (which is about right)