Anti-Aliasing and Dynamic Optimization

I need some help with the game.

I have to play the game with Dynamic Optimization on, it's the only way to have lower quality textures, which greatly help with fps, but I hate that even on medium, it doesn't have any anti-aliasing. They should've made anti-aliasing a sepparate option like motion blur, which is good they did make optional, since I don't like it, it looks awful when the fps drops (cities mostly).

Is there a way to force anti-aliasing on the game? I tried using Radeon Settings but it didn't work.