anti-aliasing problem

Alright so I recently bought the ASUS Dual RX 480 8GB. The rest of my system is Intel i5-4590 3.3Ghz with Intel boost technology enabled for auto-overclocking, but no fixed overclock and 16 Gigs of HyperX 1600Mhz DDR3 ram. The issue. I will give Need For Speed Payback as an example game, as I...