There is a bottleneck in the metadata propagation code that slows down the system after roughly 16 nodes (there is one place where we used an O(N^3) algorithm i

There is a bottleneck in the metadata propagation code that slows down the system after roughly 16 nodes (there is one place where we used an O(N^3) algorithm in the interest of shipping the product). This isn't an inherent limitation, just the state of affairs today. We'll resolve this in the next few releases, but we wanted to be up front about this limitation for the time being.