What's the efficient way of storing loaded chunks?

Im working on a terrain loader generator and everything seems to go very great.

The only question is wether I should use the conventional way of creating instances that use the least MB of memory usage in the local player and storing them in a folder, or another way that I don’t know.

I mean if you want to be mega efficient with memory you can store the bare minimum with a custom binary encoding format and a buffer type. In general a roblox instance does store a decent amount of information so if you are having concerns with that even something like an array of values that only describe what you need could help massively