gpu memory restriction
if your graphics card memory is 6GB or more than 6GB>>>turn off
if your graphic card memory is less than 6GB>>>turn on

vertical sync>>turn off
Weapon dof>>turn off
motion blur>>> 0%,
chromatic aberration effect>>turn off
film grain effect>>turn off,
sniper scope dof>>turn off
lens distortion effect>>turn off
DX12 enabled>>turn off

The settings I'm talking about are distracting options for the game, so you'd better turn them off.

BRIGHTNESS>>90% (if you don't this, you cant see almost anything at night map)

nvidia graphic setting>>digital vibrance=100(it helps a lot when you play at night map)
nvidia graphic setting>>gamma=1.6(it helps a lot when you play at night map)

If you get motion sickness while playing games, recommend raising the fov(=field of view) level.
The fov number i recommend is 90