I have tried all of the suggestions netstruggler, some time ago. All suggested a complete loss of connection. It doesn't make any difference if the ethernet wired connection is enable or not but if it is enabled (either before the wifi drops connection or after) and a cable is connected the internet access is resumed from where it was when it stopped. The browser doesn't need anything beyond F5 to reload page.
Last evening I followed a few threads in fora relating to the problem I see and tried opening a terminal window and doing:
sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/*
and then reboot the machine.
I have not figured out what it is changing, I will do "man" to figure it out but it does seem to have improved the situation, the machine has been on for some hours and the connection has stayed up. Finger crossed.
Rans6........