By using a "common" file structure, the game attempts to reduce redundancy by storing shared assets in a single place, though the sheer volume of high-resolution data remains high. Quality Management in Development
The Special Ops mode, which returned from Modern Warfare 2, required a unique balance of visual clarity and performance. Because the mode often featured more simultaneous AI entities and explosions than the standard campaign, the commonspecialopsff files were optimized to ensure that even at "high quality," the game wouldn't stutter during intense survival waves. Why High Quality Assets Matter for Modern Players