I read through all the posts and did not see this problem mentioned but, my apologies if it has. While playing act III on multiplayer the game works fine until you get to the elunei islands. Once you get here the game will freeze if you aren't playing by yourself and you need to restart the game completely. It's not a crash as you can still save and exit seems more like extreme lag. Well, I played through the islands by myself and then tried the next part with my friends. However, upon taking the south exit out of the town the game again does the same thing, I have been using the hotfix since I started this character and it was working fine until act III.

I am using the retail version and have tried both the newest version along with older versions with the same result.