I took the opportunity to find an empty Caspian server and try the different AA modes (no combinations) to determine image quality versus FPS impact. I chose a particularly demanding point of view in the map, scoped in and kept my mouse dead in between screenshots (turned it off while screenshotting, back on during setting screen). Rig specs are in sig.
Settings:
Ultra preset (except AA mode, which was the tested variable), 90 FOV, Motion Blur Off, 1080P
No AA: Jaggies galore! Good FPS.

2x Deferred AA: Huge hit to the frame rate already! I don't notice much of an image quality improvement. Do you?

4x Deferred AA: Wow look at that FPS tank! Starting to see some softening of the grass and the trees near the forest.

Low AA Post: Really small hit to the frames but not much IQ improvement.

Medium AA Post: Where did the jaggies go!? The image looks very nice with a minimal reduction in image sharpness.

High AA Post: Virtually no aliasing now, but I see a huge cost in image sharpness and detail level. It looks a bit blurry.

My two top contenders above one another, 4x MSAA and Medium FXAA (switch between them using Previous and Next):


Pay attention to two things: IQ, and FPS. My personal favorite is Medium FXAA. The better trees/fencing and the 24% higher FPS truly make a difference. Minimal perceptible loss in image texture sharpness, if any.
Settings:
Ultra preset (except AA mode, which was the tested variable), 90 FOV, Motion Blur Off, 1080P
No AA: Jaggies galore! Good FPS.

2x Deferred AA: Huge hit to the frame rate already! I don't notice much of an image quality improvement. Do you?

4x Deferred AA: Wow look at that FPS tank! Starting to see some softening of the grass and the trees near the forest.

Low AA Post: Really small hit to the frames but not much IQ improvement.

Medium AA Post: Where did the jaggies go!? The image looks very nice with a minimal reduction in image sharpness.

High AA Post: Virtually no aliasing now, but I see a huge cost in image sharpness and detail level. It looks a bit blurry.

My two top contenders above one another, 4x MSAA and Medium FXAA (switch between them using Previous and Next):


Pay attention to two things: IQ, and FPS. My personal favorite is Medium FXAA. The better trees/fencing and the 24% higher FPS truly make a difference. Minimal perceptible loss in image texture sharpness, if any.