I used the term broken to mean "not doing what it's supposed to".
The system they use is the lesser of two evils and for a pilot concept on getting 200+ people in one area fighting, it does a great job. However, Surge + Z-axis changes + heavy combat was probably a bridge too far for this engine, and hence something needs to give.
Wasn't trying to say that the Devs screwed something up, just that the current technology isn't there to do everything the "ideal" way.