I could play this game just fine solo or with friends on Xbox with the only issue being when you go to open doors it lagged severely. I mean id have to press the button to open doors numerous times before it would register. Also sometimes I wasn't able to trade loot with my friends.

After this update and server sweep the game is trash. Way worse. The zombies lag terribly registering hits on me before I even know what to swing at. Doors still don't open and lag unless I repeatedly press the open button. I had a zombie on the first floor of a building somehow kill me on the 2nd floor even though the floor had no holes or openings. I can barely share loot items with friends still. My hits on the zombies lag to register. What happened???? I'm on a very urban area with very very good high speed internet and did not have an issue with this much of the game until this update.