When you use the command /spreadplayers and the spreaddistance: float is a big number (5000 for example) makes the world slows down up to 6 times, in a medium-high end computer. In slower devices should be even slower. Once the world is restarted it works fine again
How to reproduce:
Open or create any world with cheats enabled
Execute the following command
/spreadplayers 0 0 5000 10000 @a
You will get teleported to a random location in the world in a 10000 radius and to y=255 (another bug related to the same command so recommended to use the command in gamemode creative)
Once you are in the ground trying to mine any block or make any action you will clearly see that it takes a lot to do.
Once the world is closed and reopened it work fine again
Expected behavior:
Do not lag the world and tp a player to a random location into the highest block that is not air
Linked issues
is duplicated by 6
Comments 9
Comments from MarsMan512 in MCPE-56402:
When you load into the world initially it starts at 20 ticks per second. However, after using spreadplayers and pushing everyone out thousands of blocks, the world tick rate drops to about 3 ticks per second. Even after everyone is teleported back the tick rate doesn't return to 20. Even if you teleport back to spawn, it won't get rid of the effect until you reload the world.
It doesn't matter how many people are in the world. It effects singleplayer as it does multiplayer.
Steps to reproduce:
Generate or load a world (superflat, normal, doesn't matter)
Build a redstone clock at spawn. It'll work at a normal speed.
Use the command '/spreadplayers ~ ~ 0 5000 @s'
Once you land build another redstone clock. It should tick very slowly now.
Reload the world. The clock should operate at normal speed.
Effects on the world:
The player seems unaffected by this. Hunger goes down as normal, and physics don't change.
Eating, however, is slowed to a painful crawl.
Redstone is slowed down massively.
Animals and other mobs are in slow motion
Furnaces/Smokers/Blast Furnaces take more time to smelt anything
Low end devices experience crashes.
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Confirmed on Windows 10 v1.12.0.28. Lags in all gamemodes. Testing on realms is needed