title: performance of Polygon Collider 2D
body: <p>I'm developing a 2D isometric game. I, want to put <code>PolygonCollider2D</code> of each individual diamond-shaped tiles to get a touch input on an individual tile.</p>
  
  <p>What is the use of such excessive <code>PolygonCollider2D</code> impact on performance? Or there a better approach?</p>
  
  <p><a href="https://i.stack.imgur.com/d20H1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/d20H1.png" alt="enter image description here"></a></p>