This expenditure is no problem since they can produce one chaos spark per second. They are not stopping and moving less than one second, so their expenditure is not up to their rate of production of Chaos Sparks.
The rate of production cannot be faster than that. Some say that this rate is the true definition of one second.
One chaos spark per second is very fast. Some world gods can't even manage one chaos spark per minute because they lack the resources to refine it. But one chaos spark per second will be too slow if they engage in a fight with another world god.
As world gods, they can make tens of thousands of moves per second in a fight with another world god. In a fight with many world gods, they will need to make more moves.