WildStacker is suitable for servers with a lot of entities and drops which want to reduce the server-lag that they cause without changing the game experience.
Diamondxr showcasing the plugin
The plugin can stack entities, items, spawners, blocks, buckets and stews - all in one plugin. It uses asynchronous tasks to ensure the best experience with least amount of lag possible. The plugin has algorithms for stacking entities that no other plugin has to prevent lag from entities.
The plugin has support for many plugins to distinguish custom mobs from vanilla ones. The following plugins are supported: