The problem isn't any one calculation. It is when you update a cell that causes many, many cells to need to recompute. > be server side and my machine simply v

The problem isn't any one calculation. It is when you update a cell that causes many, many cells to need to recompute. > be server side and my machine simply views a local window, and calculations happen locally if feasible with locally available data I assume this is what is happening? The client tries to recompute the data locally. But bails out on cells where it is missing input data. Then the server responds with an authoritative copy of visible data that the client applies over top of its guesses.