By what manner are you putting objects in areas they shouldn't be? Are they supposed to wander out gradually or teleport out instantly?
You might be able to simplify/refactor your project, 100 events can go a long way. Otherwise, you can also try working on different parts of your game or mechanics in separate projects.
If you post a capx, that would make it a lot easier to help with your problem, and also maybe compact your event sheet too.