Surface Pros with Intel ax201 WIfi cards "connected, no internet"

[techsmith320]

We have a number of brand new Windows Surface 7 devices with the intel ax201 Wifi cards

Regularly (like within minutes of logging in) the wifi connection goes from connected, secured to connected. no internet connection changing the icon from the wifi one to the globe with a cross

The device still had an IP address, can see the connectio

BUt won't connect to the internet

 

We've updated the drivers, we've turned the settings to only use lower bands, to only use 802.11G, to turn off MIMO etc all as mentioned in other threads

 

Still having the same issues

 

The surface 6's with the Marvell wifi cards, solid as a rock. no issues