Possible causes:
- Too many doodads (5000+, specially if these doodads have constant animations, like fire or other cinematic doodads
- Too many units moving and acting at once.
- Too many periodic triggers, specially if they fire faster than they can be finished
- Too many units being created/removed in the map via triggers
- too large map
- Too many files added to the map
- too many triggers firing at once |