This worked for me. >>>
Go to Control Panel.
Go to Network and Internet.
Go to Network and Sharing Center.
Go to Change Adapter Settings.
>>Remove Hamachi<<
I'm not entirely sure why but I saw this briefly mentioned in this thread and it works perfectly. Eliminating the game breaking issues.
Windows 7 64*
i7 3820 3.6 Ghz
GTX 780
Hope this worked guys!