I actually digged a bit deeper into game development and what I think I understand now is that the netcode in FIFA games is outdated. Not the servers, the netcode. I have no idea how it's implemented but considering how some fighting games, FPS games and RTS games have been successful at it in the last 10 years, I would hope a company the size of EA could also do it, but I guess not. They really need to rewrite that portion of the game to improve gameplay online and see what other games are doing with theirs. Fighting games seem to have pulled this off somehow and games like StarCraft 2 and other RTS games as well.
I'm editing the original post a bit to target the right issue, but considering this is an internal part of the game they are not going to fix it. I would think they could do A/B testing, release the rewritten netcode to a selection of users and monitoring feedback, but no. Or even giving people an option to opt in to a beta release of that feature! Feedback based development is really missing here.