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nerf-spawner-mobs

This setting is in spigot.yml.

The default value is:

nerf-spawner-mobs: false
Section titled “Recommended starting values”

If your server has lots of mob spawners, or if you find that dungeon mobs are causing lag, you can set this to true:

nerf-spawner-mobs: true

If you don’t think that mob spawners are a big issue for your server, just don’t change it from the default false. There’s no point in optimising something that doesn’t cause any lag anyway - it will just annoy your players. The default value of false:

nerf-spawner-mobs: false

What does it do?

Section titled “What does it do?”

If you set it to true, mobs that are spawned from mob spawners (like in dungeons) will have their AI completely disabled.

That means they won’t be able to:

  • move
  • attack you
  • interact with the environment in any way
  • they won’t even know you are there…

Why set it to true?

Section titled “Why set it to true?”

The main thing that causes lag with mobs is their AI - pathfinding, attacking, looking for targets, etc. If you have lots of mobs from spawners, they can cause quite a bit of lag.

Disabling a mob’s AI means they won’t cause really any lag at all. Because spawner mobs usually don’t need AI anyway (they are just there to be killed :P) you can generally safely set this to true.

Why not set this to true?

Section titled “Why not set this to true?”

It can break farms which rely on mob spawners (e.g. those early game mob grinders people build).