Network manager 18.04

I was running 16.04 then upgraded to 18.04. I had set up 19 ‘Free & Public DNS Servers’. In 16.04 I could choose any one at will. Some faster than others, when I upgraded that is no longer an option. You only get to use one server and if you want to change you need to input the information for each and every server even the one you just replaced, none of the information is auto-magically saved. I have installed Stubby and am currently using Cyberghost VPN. All is good however I can no longer compare the servers speed I am currently using against another as I have in the past. Does anyone know of a workaround?