How often should I search for path to a mobile target ?

Hi. This question is about the pathfinding behavior, which I think uses a lot of CPU.

If my pathfinder is looking for a mobile target (for example the player), how often should I update its path ? Every tick ? Every 0.X seconds ?

I also have the same question when having a lot of enemies (30+) looking for the player.

One suggestion would be that each tick only one enemy updates path.

You can create variable "currentEnemy", every tick add 1 to it, when it is > number of enemies set it to 0.

And then each tick

System.pick nth instance (select enemy and "currentEnemy" as instance number) - update path.

That way each tick only one enemy will look for path and your CPU will be used evenly.

Of course, that mean less enemies = better pathfinding.