A quick note, I think dead reckoning is not about correcting for latency. It is a conscious decision on the server to send less precise (cheaper), incremental data to the client most of the time. The client extrapolates from this imprecise data to still provide a fluid and continuous motion. The server performs the same extrapolation, and precisely tracks the error accumulated by the client to decide when to send a more expensive and precise packet that corrects the divergence.