PSA for peeps only getting laggy games: For some reason it's resetting my data center connection to Salt Lake even though I'm in the UK (it's the same for my 3 friends). To fix it (on PC) restart the game and leave it for a minute on the "click to continue" screen and data center text will appear that you can click and set yourself to a more local connection. Has fixed the game for me, but I don't know if I have to do it every time I load the game now. Probably the same process on consoles.
Mine was set to Salt Lake City as well, switched it to NY. Thanks for the heads up.