1. Grenade that are planted don't explode. They beep but never actually explode when an enemy approaches.
2. Some people seem to have the ability to but their gun through the corners or a wall and still fire.
3. Constantly getting Xs on enemies when I have a clear visual of them in my retical.
4. When an enemy is in 100% of the retical the bullet seems to hit an imaginary wall because i'm close to a corner.
These are just a few