Updated:

Common commands

GoalCommand
Check the current rate/tick query
Double speed/tick rate 40
Half speed/tick rate 10
Normal speed/tick rate 20
Freeze the game/tick freeze
Unfreeze/tick unfreeze
Advance one tick while frozen/tick step
Advance 10 ticks/tick step 10
Fast-forward one day/tick sprint 24000
Stop fast-forwarding/tick sprint stop

What freeze does

Mobs, redstone, crops and the day cycle stop, but players can still move. Freeze, then /tick step one tick at a time to see the exact order signals travel through a redstone circuit.

rate vs sprint

Very high rates make the game lag because the computer cannot keep up. On a server, every player is affected.

Using /tick query to measure lag

/tick query shows the target tick rate and how many milliseconds each tick actually takes.

To run 20 ticks per second, each tick has to finish within 50 ms (1000 ÷ 20). If the number is above 50 ms, the game cannot keep up and everything slows down.

To cut lag, look at dropped items, mob counts and redstone clocks that never stop.

Where it is not available

Good to know

Check your command

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