Низкий фпс | LOW FPS

Hello, I want to ask you for help or advice. Immediately I say, forgive me for my bad English. I have very low FPS and lag in the game in any place, in the city in general horror. FPS 15-30, in theory should 60 frames, even at high, help fix it. here are my system components.
Processor: AMD A10-7850K Radeon R7, 12 Compute Cores 4C+8G (4 CPUs), ~3.7GHz
Memory: 8192MB RAM
Card name: Radeon™ RX 460 Graphics