Index: ps/trunk/binaries/data/mods/public/simulation/components/UnitAI.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/components/UnitAI.js
+++ ps/trunk/binaries/data/mods/public/simulation/components/UnitAI.js
@@ -4645,7 +4645,10 @@
 		return;
 
 	cmpUnitMotion.StopMoving();
-	cmpUnitMotion.SetSpeedMultiplier(1);
+
+	// Formations misuse the speed multiplier for adapting its walk speed to their members.
+	if (!this.IsFormationController())
+		cmpUnitMotion.SetSpeedMultiplier(1);
 };
 
 /**