(!) This is a development build and is not recommended for production yet.

(!) UNSAFE VERSION

Efficient Entity Stacking
Entity stacking has always been used as a way to prevent the server from having too many entities. Sadly, many past attempts at stacking didn't focus on the performance side of stacking, leaving many stacking plugins in an unfinished and not-ready-for-production state.
LagAssist seeks to change that by implementing an entity stacker that focuses on performance:

• Can stack thousands of entities almost instantly.
• Uses the chunk grid for better performance optimization, instead of relying on searching mobs around an entity (which is a performance intensive process).
• Can distinguish between most different mob traits.

Not only that!:

• Extremely fast migration from old mob stackers.
• Compatible with paper's more efficient PreSpawn event (instead of mobSpawnEvent) which makes it really efficient with spawners,