Floodlight camera internet upload speed

I am given to understand that my floodlight cameras (two) require a minimum of 2Mb internet upload speed. This is fine at the moment as I have a fast fibre connection. Unfortunately, I am considering leaving my supplier, Virgin Media, because of poor customer support and moving to an ADSL supplier, as there are no other fibre suppliers in my locality. I understand that the best upload speed I could get from any of them is 1Mb which, I assume, would be inadequate for my Ring cameras. One possible option which crossed my mind would be if I could somehow wire directly into the cameras to make my own recordings and avoid the need for an internet connection. Does anyone know whether this might be feasible and, if so, how best I should go about it?