Quote from DeltaCadimus: Go
Quite impossible, as there's separate waves per unit type, so speed shouldn't be a problem, especially between Zerg units. The issue is, they wait a bit on each waypoint, when they should be moving, and then when the other units catch up, it clumps up and screws everything.
Are you using an AI personality with waves you built, or are you simply picking each unit, adding them to the next attack wave, and then sending the attack wave? And how many waypoints are you using in the attack waves? Is there a way you can remove a waypoint or two, so that the meetings aren't in choke points?