not sure what happened why the connection is suddenly that bad since 5 days ago... i thought was my ISP which causing the problem so I complaint them again and again until I upgraded my speed to 10M... but just now I tried again... still very bad... Hmmm.... can I request to download my map from AG+ out so I can just play single player since I can't play online with a long delay just to open a chest.... lol
The servers have been having a massive issue with lag for the past couple of hours, so it might not be your internet at this stage. However I was experiencing no lag for the past 2 days I've been playing apart from today.