Every unit in the game has a weapon. All weapons combined take up a significant portion of the simulation budget. The time is not spent on creating the projectiles. It is spent on the scanning for targets and the filtering of targets for the weapon to fire at.

At the end of this topic you’ll understand why this is so expensive, what we’re changing about it and what that means for the behavior of every single unit in this game. The reason for these changes is simple: performance. Nobody wants to play in slow motion, even though people unconsciously appreciate the additional APM.

This topic is related to this pull request on Github