Physic performance is very slow when using 2D Polygon Colliders
Fixed Version
This issue has been fixed in Playworks Plugin 5.0.0+
This could be due to an unoptimised part of the Unity Playworks Plugin physics code.
Possible solution:
Replace 2D colliders with 3D colliders.
Or try to remove 2D colliders from the scene (don’t just disable them) and use a maths calculation instead. For example, use Vector3.Distance(); to see if the interaction of two objects is close enough.