Some bots with AIPath do not follow target if there are too many bots ( > 30 )

Beginner Questions
1

I am tested using AStar Path Pro ( 3.2.5.1 ), Example1_Grid/GridGraphExample.
When I create >30 simple bots ( Capsule with AIPath ) and assign its target to Target GameObject. Some bots do not follow target.

2

The test case is wrong, the capsule is not at the ignore raycast layer, sorry about that.