Drawing a Grid

How would i go about drawing a grid on top of my terrain.
The only thing that came to mind was using Projectors but I seriously doubt a projector of the size of my whole terrain is a good idea.

Would appreciate any help…

The projector doesn’t need to be the size of the terrain, it can be one square, set to repeat instead of clamp.

this shouldn’t slow down your game much, check the other things that you changed if any. Also, run the game and click stats next to gizmos at the top right of the game panel/window.