There's an issue in the game where the crosshair size and perceived recoil would differentiate between different resolutions. Crosshair is affected by the UI scale, and doesn't correctly represent your weapon spread if it's not set to the native UI size. Even though the actual recoil is the same, it's perceived differently as there's an increased amount of screen shake on higher resolutions, compared to lower ones, especially compared 4:3 to 16:9 resolutions. The screenshots below illustra