How stable you latency is almost more important than how low.
High latency will result in you seening planes further back along their historic track (as they will see you further back along yours), and a longer delay before damage done to a foe reaches them and becomes visible.
Variable latency will see you (adn from your point of view everyone else) doing starship enterprise impressions.
=)
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Graywolfe <tim@flibble.org>