Wow, nice idea. Maybe i dont have to recalculate all triangles but I still have to create dynamic buffer for each chunk :/
And I need to store a lot of volume data. What is the best way to increse speed? Binary files?
Well, binary files are usually more quickly loaded than text files, yes. Other than that, you'll need to profile to find where your bottlenecks are, and try to apply optimizations as needed.