I've just had the update, and unfortunately Arma 3 has gone from working perfectly to having serious problems for me.
The first problem is that the screen seems to be tearing whether I have vsync enabled or not. The second is that my FPS has dropped by around 20 with exactly the same settings. I've tried the new HDAO and that doesn't seem to change anything. I get random FPS drops all the time, almost like the game is loading a new area, and then the FPS jumps back up again. All the while the screen is tearing, especially when looking at the floor.
Here are my system specs:-
I7 2600K @ 4.4ghz
2 x GTX 570 SLI
8GB Corsair XMS 3
Asus Xonar DG
Corsair HX850W PSU
Game is loading from a crucial M4 256gb SSD, and is running at 1920 x 1080. As mentioned, I haven't changed any settings or startup parameters since the patch dropped. Previously, I was getting a solid 60fps in singleplayer and around 40fps even on crowded servers. Now I am getting somewhere in the region of 30-50 fps in singleplayer and very variable FPS in multi (haven't tested this much). The screen tearing is also pretty unbearable tbh. I never had tearing before the patch whatever my FPS was.
It could be just a driver issue for SLI as I know the lighting engine has had some tweaks, but is anybody else experiencing problems of this nature since the patch dropped? It's just so weird, as the game was working perfectly this morning and this afternoon it seems to be borked completely.