It runs your plugins and worlds unchanged. Underneath, it does less work where no player is watching, and full speed where they are.
Throttling only happens away from players. Where people are, nothing changes.
Every option is reversible. Turn it off and you are on plain, stock behavior.
No fake promises about TPS or memory. Just real settings that earn their keep.
A handful of switches in one config file.
Faraway mobs think less often, scaled by how close the nearest player is. The biggest single win on a busy world.
Tightens the throttle only during the spikes that would cost you ticks, then relaxes the moment things recover.
Farm villagers walled into a cell stop burning CPU on paths they can never walk. Trading and breeding stay intact.
Caps how many path searches run per tick, so a pile of mobs can no longer spike the whole server at once.
Kills the lag from cramming a lobby or PvP pit full of players. Sparse areas behave exactly like normal.
Moves the heaviest mob math off the main thread for a big reclaim. Off by default, worth a staging test first.
Everything is configurable in one file, down to custom mob and XP rules.
Drop it into your server folder and start it like any normal jar. Your plugins and worlds come along.
Download LionSpigot