Going through graph obstacle

  1. Hello everybody. It seems to me, I missing something easy. But I’m currently stuck. I’ve been placed graph with some virtual walls, but pathfinder builds path throgh them ((

It looks like this. What I’m doing wrong?
I’m using basic AIPath script to move units

It looks like you are using the SimpleSmooth modifier with too much smoothing.

Yes. switching off simple smoothing solves the problem, but I can’t found right values, for smoothing which works well. What the best way to work with smoothing?