How to stop moving back or stop choosing another AI's path?

Beginner Questions
1

When AI moves towords the target suddenly it goes back and choose another path and back to its path again.
I am using AIPath script.

2

Hi

That looks odd. Something like that shouldn’t happen unless the pathfinding system was extremely overloaded.
How many agents do you have in that scene?

3

Thanks for the reply. I have only 15 agents. I solved it by making node size to 5. Is there any other way to solve it? Actually I can’t find any reason why its happening. And also how can I check pathfinding system is overloaded?