Slow unit responses

I'm working on a resident evil map in which the players have to defend against hordes of zombies and other units. For some reason i'm getting terrible unit responses after the first wave of monsters spawns. I know its not because of my connection or lag because i've tested this with several people and its still doing it... I've also made sure that no triggers are constantly in effect

For example when u tell a unit to move it will move about 5 seconds later, which completely screws the map. Any help would be VERY appreciated!

do you remove units, kill them or explode them?

no units are just being spawned, and then they go attack a random player from cinematic group (the players)

which means they all die ;)

try this:

unit dies:
explode unit
remove all corpses

I've noticed that if there are more than 100 units on a team that their responses begin to slow noticeably. I set the max units to 125 when I'm making maps with AI.

Try breaking up the comp's units into more than one team. *shrug*

Otherwise be content with 100 or so at once.

Care.