Denied Global Suggestion: mobs spawning

[bestgamer43]

Suggestion:
mobs spawning

Detailed description:
Hello when i go maybe 20 block away from my spawners it dosent spawn i was wondering could it be infinity so dosent mater how far you are it will spawn only in your island

Server/Place suggestion is intended:

OP-Skyblock

Reason:
OP Skyblock

Example:

 

[iactivateMC]

Well it isn't a problem if you work near your spawner though

 

[DragonBoyHD]

This is a problem on every server but it is a thing against lagging cause if your spawners continue to spawn when your not online or not even near them you will lagg allot and maybe the whole server will be lagging because of you