game (Attack on Titan (2016))

Iron you need to change..
Well, or try a driver update on the graphics card, turn off vertical sync (in settings vidyuhi)
And put on a minimal salary..
Might help

chest.aleks
A resolution of 1280 by 720,Effects ON Quality,Reflections ON,Texture Filtering Medium,rest is OFF.

AA
Even windowed mode saves

How can it lag??? on the minimum salary of the person you are playing? it is as ancient bucket needs, what would it lag?!