Strange thing is, I can load the game (showcase/multiplayer) with FSAA off, then while in game enable both FSAA with ATOC and it'll work. But when I quit the game it will freeze just like before or give me vertical lines.
Prior to this 7970 I owned a 5870 and that could run the game fine with FSAA and ATOC on, it ran slower but at least it was 100% stable. However that was prior to the 'Survive' update.
Other games like Metro Last Light, BF3, Serous Sam 3 etc, which have FSAA as well all work without issues. I have tried different drivers, re-installed the game and also formatted my pc.