my guess its the FOV stuck at 70-75. so low everyone is lookin through toilet paper tubes.
Your actual eyes only see 60 degrees and only a small fraction of that clearly. It seems like more because your brain actually moves your eyes around and builds up a bigger picture by merging information from several smaller pictures. That is why your peripheral vision is actually not much more use than as a coarse movement detector. That part of your vision is made up of barely glimpsed snapshots of the world seen on the edges of the real cone of vision. This is why when you focus, your real FOV narrows. When you are focusing on an object, you brain stops moving the eyes around rapidly and instead take longer pictures of the same area. This means it sees more detail where it is looking, but much less detail off to the sides.
This is why a soldier is told to look around constantly, making sure he uses the most sensitive part of his vision to look at every part of his arc. He is also told to have the weapon pointing anywhere he looks. So you should not be moving your eyes to look at the side of the screen. You should be staring at the dead centre, then moving the mouse to turn your "head" in game. The only time I'm not doing that is when I'm camping and trying to watch a large area at once. At that point, I'm expecting to have enough time to see the target, adjust my aim, and fire.
When I'm moving, or in close, I know I need to shoot the instant I see something, so I better already be aiming at it.
It's the little things like this that make other people call you a cheat, or say the game is unrealistic. They do something as basic as looking at the screen differently so they see the game differently to me, and can't understand how I can do what I do, because they can't do it.
I'm the same way when it comes to camp and snipe. I can do it OK, but some of these guys are crazy. They can shoot the balls off a fly at 200m. I don't demand the game be changed to stop them. I just assume they are out there and try my best to avoid them until I can get into my comfort zone.