A million 1k-wide rows is still just 1GB. You can go double that width and triple the rows, and you still comfortably fit in memory on a raspberry pi. I don’t

A million 1k-wide rows is still just 1GB. You can go double that width and triple the rows, and you still comfortably fit in memory on a raspberry pi. I don’t know about “big” or “small”, but the threshold for “done properly” has to be really low for that to become a bottleneck.