I noticed that everyone seems to be having the same issue with the DLC 4 collection not allowing them to load their games. My game, however, will load just fine but I cannot join an online match with the DLC enabled. It just sits there and keeps searching and saying "game not found" over and over (I've tried every playlist). Sometimes it will add one "matched player" but it still just sits there. If i disable the DLC, I can join matches just fine.
I tried all the fixes for the other problem everyone seems to be having but it doesn't help me. Has anyone had this issue since downloading DLC 4? And has anyone found a fix?