2 player co-op: Constant disconnects with my friend, errors like failed to migrate to new hosts session, save game files are different etc
Multiplayer: Can't even get into a single race, puts me in a lobby and then after a bit will boot me out of the lobby to a lobby with just myself, if I do manage to get into one (rarely) it will just disconnect me mid race and say everyone left
Extra info: I live in Australia