why is that?
too many units in my map? or too many trigger? whyyyy
How could I know? You haven't told us the first thing about your map. Perhaps you could upload your map so we could see.
Lag can be caused by having too many units, too many looping triggers, leaks, too many special effects or resource intensive models/textures or just inefficient coding in general.
Well there are currently 749 preplaced units (the object manager).
Try creating some with triggers instead, when the players enter those regions.
And you might want to learn a bit about grammar in English, it's going to help you a lot when asking questions here,
and your map has a lot of grammar faults that you need to fix.
Good luck!