Unity Game Optimization - Third Edition

Prefab pooling

The previous pooling solution is useful for typical C# objects, but it won't work for specialized Unity objects, such as GameObject and MonoBehaviour. These objects tend to consume a large chunk of our runtime memory, can cost us a great deal of CPU usage when they're created and destroyed, and tend to risk a large amount of garbage collection at runtime. For instance, during the lifecycle of a small RPG game, we might spawn a thousand Orc creatures, but at any given moment, we may only need a maximum of 10 of them. It would be nice if we could perform similar pooling as before but, for Unity Prefabs, to save on a lot of unnecessary overhead creating and destroying 990 Orcs we don't need.

Our goal is to push the overwhelming ...