One of the benefits of a data oriented ECS setup is that it's much more cache optimal due to the way data is packed, but that's not necessarily the primary reas

One of the benefits of a data oriented ECS setup is that it's much more cache optimal due to the way data is packed, but that's not necessarily the primary reason to use it. In fact, on the data packing implementation side, there are actually differing ways in which the data can be packed, with differing performance pros and cons depending on type of data / access pattern. Really, the primary benefit is that you get a much cleaner paradigm to work with. Here's a good basic overview of the point of an ECS system: https://iolivia.me/posts/entity-component-system-explained/ https://iolivia.me/posts/entity-component-system-explained/ In particular I'll point to the key quote in that post that distinguishes ECS from OOP encapsulation: "The whole idea is separating behaviour from logic, so all the data goes in components and all the behaviour goes into systems."