[rbanffy]

It was certified as testes, so the lag has been there for the whole 10 years.

[sslayer]

Dependability and reliability override responsiveness

[netr0ute]

Ironic, because responsiveness might inherently make it undependable because if you really needed to know where you are right now, that multiple-second delay isn't going to help.

[p_l]

Aviate, Navigate, Communicate, in this order.

And the map isn't even part of the primary navigation method, plus with multi pilot crew usually you can offload slower, less time critical tasks to copilot.