His "Sensible ECS" is basically what I did on my (simple 2D) game, just simple structs with components, and functions that operates on these components.
That works well, although it does not features parallelism, but still managed to run on a old laptop that can at most run Windows 7.
That works well, although it does not features parallelism, but still managed to run on a old laptop that can at most run Windows 7.