Having some Serious Lag Spikes/Memory losses

I'm having some serious lag/memory leak problems i am not sure what it is.I have never Experienced this before so i cannot begin to think what the cause is i have some mported models but i dont think its that.I also messed with the Game contants i dunno if its that either but like i said i have never experienced this before so i dont know what is the cause of please help me out

Just Adding in that my game also Splits off(crashes after a while)

You're being almost as vague as could be possible. We can't possibly figure out what might be causing lag from the information you have provided. Have you cleaned up leaks? Are you running intensive code on short duration periodic events? Do you just have too many units/doodads/effects on the map?

I would upload the map but i dunno how to use this thread if you could Explain how i would do it so you can check it out for yourself but other than that i dont really know how to explain because i dont no what are memory leaks and stuff.Like i said i have never encountered this problme before ; ;. i am sooo confused.