Hi @Newbie_Coder,
Hmm, that’s quite strange, you can use the following extension to get a better understanding of what collision shapes are created:
I’m curious myself why it behaves like a plane, most likely the scale is wrong or something like that.
One thing you can try, similar to the terrain generation example, try creating a separate mesh instance for collision model instead of reusing the render mesh instance. Not sure if it makes a difference though:
https://developer.playcanvas.com/en/tutorials/terrain-generation/