Lag on online dynasty, game not working properly

Trying to create and online dynasty on my xbox, so I can play with my team builder team, but the lag on the menu is making it impossible to even play. It takes 25 seconds to get from the roster to the dynasty setup screen and It takes 28 seconds (I timed them) to move a team to a different conference. 

Furthermore, once I actually get it, it takes 25 seconds to add a player to your draft prospects (and that's if it even loads at all), the playoff bracket doesn't work at all, hiring new coaches doesn't work at all, and creating a custom schedule takes forever to load as well. Half the time it just loses connection to the EA servers. (I'm in Australia if that helps)

Ive reinstalled the games, reset everything on my Xbox and it is still not working. And my internet connection is perfect (everything else works perfectly too). Offline dynasty works perfectly but I don't want to play offline as I can't use team builder. And before you ask EA, I've been through your trouble shooting tips