Over the past 3 weeks playing WL this is my results. Using the same team for two weeks and played my last 5 games with the same team partly in week 3.
3 weeks ago: Had no lag 14 wins 2 loses.
2 weeks ago: Had no lag 14 wins 3 losses.
Last week: So much delay lost 3 of my first 5 games and finished 14 wins 5 losses.
Now: No lag apart from 1 game 11 wins 0 losses.
I feel bad for the people who always play with lag. It's so stressful and makes the game a nightmare to play.
EA really need to look into the servers to before they even touch gameplay because no matter what you do with the gameplay we won't get the feel for it with unpredictable servers.