I would like to know if I am being throttled when it comes to gaming online because FIFA is a p2p game and I have horrendous connection problems with it in every match no matter what day, time or game mode.
It depends on your package but even if you are on a package with throttling thats only during peak times.
I am on Infinity 2 totally unlimited, the only game I have a problem with is FIFA which is p2p, I can play other EA games like Battlefield fine without any problems whatsoever it's just FIFA no matter which one whether it's 12,13,14
Then that's not the cause of your problem. As previously been said, its not a BT problem, it can't be if it's happening on other ISPs and with other players around the world. If I were you I would be looking for another game to play. Surely no game is worth the agro that this one has been giving you.