Anyone know if there are lag reducing/fixing plugins? Thanks
The lag is the latency between the server and the client. There is no plugins that can fix this.
No, there are just lag-producing plugins. 
But i think you mean a plugin that reduces the amount of entities to keep players from slowing down the server, by throwing massive amounts of items on the ground or being afk in front of a mob-farm?
I don’t know how far the Worlds .getEntities() method is implemented? This would be essential.
(Edit: checked it, yes its implemented. Nice work Sponge team! 
)
Yes that is exactly what i ment! Im still working on the server, where can i find the world.getEntities file?
Or is this a whitelist thing?
SpongeForge has entity activation - a system developed for spigot, it despawns entities that are far from players
See entity-activation-range in the sponge config file
https://docs.spongepowered.org/en/server/getting-started/configuration/sponge-conf.html
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