Factorio Forums

What I mean is: If I set that to 1.0, the biters can move at 216KM/h. But they don't, until they see my defensive wall and move from 'walk slowly twoard base' mode to 'attack mode!'. So...how do I get the biters to hurry the **** up to my base wall? I'd love for them to bee-line at 200km/h all the way from spawner to my turrets. How do I make that happen?

Turns out I was wrong. The movement_speed does actually affect their walking speed. But factorio pathing glitches out at anything great than the walking speed of a spitter. If you double spitters to walk as fast as biters, pathing frequently encounters a 'pause' step during pathing, but the group keeps moving and eventually despawns because of it. The fix is to use the Rampant mod. It does pathing one little chunk at a time, and gets around the problem that way.