GC Problem?

I have been using this for my path finding in general, but I think I am encountering a lot of GC allocation inside the algorithm which I can't track due to using dll.

Myabe there is way to track them, but I am novice at that so any help would be useful.

I use this in my Unity project and it works fine, but it just produces lot of GC allocations every time I search for a path.