Tower Defense Problem

Hey i just have a simple question.

Situtation:
In my TD the creeps have a maze to follow, the terrain being unbuildable, and on each corner is a rect. So my triggers are similar to:
So the unit walks around to each rect until the end.

Probelm:
It's not smooth, meaning: when a unit gets to a region, they stop for like half a second.
And toward the end of the line (the creeps spawn 1 at a time) they get more jumbled up.

If someone understands what im trying to communicate and knows a solution please lemme know. Thanks!

If there's too many units, they can have a bit of lag with the move orders going through.

well would it be easier if i just created them all at once?

The only solution to having too many units is having fewer units.

try setting their collision size to 0.

otherwise i dont know what ur talking about, maybe a screeny is in order?