ConstantUpdate

ConstantUpdate is one of the oldest grid rules, added in Prerelease 0.0.8a. It controls delay between grid updates. If it is set to 0, the grid will update only on entity act. (Or only on player move if EntityActUpdate is set to False). If you want to set your update delay to zero without turning it off you will need to use second command.

Control commands
/rule ConstantUpdate [0-2000]

/var game.loop.waitDelay set 0￼.