To be honest, with this setup I recommend to try a mixture between medium and high settings. While the laptop has quite good hardware for a notebook, I have a similar, when slightly better, notebook and running BF4 on medium with arount 40 FPS. Have you checked your ATI Control Center for video enhancing features? I recommend to only use there the option "use application settings" and create a custom video setup in Battlefield. Turn especially AA, effects and the terrain quality a bit down and check if that helps to give you better FPS. You can also try to disable the Origin "In Game" overlay, this might give you some performance boost as well.
Cheers
Basti
