what is the needed internet speed ?Further to my post above asking about playing online with mods (updated squads etc) and custom sliders... I'm successfully playing FIFA 19 with a friend across country now with Parsec, a free app that works like Google Stadia to stream your games to another PC (or device).
It's easy to set up and works very well streaming to a friend's old PC, which wouldn't even be able to run FIFA 19 without it, let alone with all custom mods, squads, sliders and ENB shaders. Parsec works a treat. I highly recommend trying it.