With UE4 am I able to create a game with low graphics and using DirectX12?

Computer Specifications:

Intel Core2Quad Q8400 2.55 ghz
8GB DDR2 Ram
500GB HDD
NVIDIA ZOTAC GT610 2GB DDR3

I want to make a First Person Shooter with graphics like GTA San Andreas.

using C++ (because it is awesome)

i dont want, awesome graphics, or post process, or a freaking nice lens flare, or anti aliasing 8x, i want a game like GTA San andreas in low detail mode, is it possible?

In short. Yes you can.

I have similar spec even lower GPU and i can confirm this is enough to do some simple games low graphics. Besides, UE4 is free so just try it by yourself

Thanks for answers and for your time! Very thankful

Can you teach me how to disable post process and all the high end stuff?