Dell XPS15 slow 2mb/s wifi

[#1]

Hi All

After some recent Dell updates to my Dell XPS15 7590 my home wifi has dropped to a rediculous 2mb/s whilst other laptops in the house have 70mb/s on Plusnet.

After searching there appears to be issues around the Killer AX1650 network card.

The default settings on the network card delivering 2mb/s were:

After some experimentation with these settings I got 70mb/s with the following settings:

Can someone tell me what the optimum setup should be for Plusnet and whether I have a problem with the Killer AX1650 communicating with a Plusnet router?

Many thanks

Al

[#2]

Fixed by router update by bobpullen with details here