This wasn't a server pack. It was a crime scene.
Leo had to ensure the siege scripts worked. v19 siege was notoriously buggy. The Flag objects sometimes despawned. The Castle Gate HP bar would freeze if a player disconnected inside the siege zone. flyff v19 server files
For three hours, he monitored memory usage. The WorldServer process started at 1.2GB. After 50 players logged in, it climbed to 2.8GB. By the 4-hour mark, it hit 3.9GB—the danger zone. This wasn't a server pack