Call of Duty's relentless targeting of 60 fps gameplay defines the series, delivering responsive twitch - based gameplay that few titles can compete with, but the
strict focus on maintaining such a high frame - rate comes at a cost: the series» potential to dramatically evolve and grow over time is limited by the narrow rendering
budget available on a per frame basis, with each instalment offering up smaller refinements to the
formula along with a modest boost in graphical spectacle along the way.