i dont think its the amount of players to be honest theres servers out there with 200 player slots without any lag or de sync so im guessing it must be something else causing it
Cant the servers be taken down on a Monday? Or another Non-Peak time instead of a Sunday afternoon??? Perhaps give some announcements or some information instead of keeping us all in the dark and guessing?
There have been problems with the server since this morning, they are working hard to fix it. Let them work on it and I am sure it will be up and available as soon as possible.