I suppose there is no solution to this? And I guess the product is so old that there are no new drivers coming out as well?? Time to move on to a different card from a different manufacturer?

@David-TP Before finding this thread I was getting inconsistent downlink speeds. I thought for a long time it was my ISP, but it wasn't. Installing the latest driver either from TP-Link (3.1.6) or...

@muzicman0 Have you tried following these instructions from Crosstalk Solutions? https://www.youtube.com/watch?v=ywhtf3l_Xpw Works fine on 22.04 as well. There is one dependency which you get...

@guillaumesoucy Ok, so the setup for the Omada related units is like this? : Internet (Public IP) - ISP Router (LAN 192.168.2.0/24) - Omada Controller(192.168.2.???) - 2nd Router (LAN...

@Hank21 Thanks for replying, but as you can see in my inital post, there are no problems upgrading when on earlier relases of v5 (v5.9.9 and 5.9.31). As soon as I upgraded to 5.12.7 it fails the...

@Ivanx00 As someone already mentioned you may be having interference problems and I'm chiming in here with a question about how you have planned your WiFi radio network? Meaning what channels do you...