[TonyD]

I use SMAA (similar to FXAA) – thanks Buchon. It works very well (or, well as can be expected) and has no noticeable impact on frame rates. Like FXAA you can toggle it on and off in game using the ‘Pause’ key to check the effect on visuals and fps. luthier has stated previously that the game engine only supports 2xAA irrespective of what setting you choose (in-game or in the gfx driver), and I have never seen an update on this.

Edit: the AA number in the game refers to the level of AA, rather than 1x or 2x, etc. Level 1 would correspond to 2X (the lowest your card is capable of), level 2 is the next increase in fidelity (2xEQ for my card), and so on.