FPS drastically goes down

Questions
1

Hello,

I am using a sample model from Babylon and adding check collisions field for it and also for the camera. When the camera comes near the model, the FPS rate jumps from 60 to 20. Why does the collision affect so much on the FPS. How can this be controlled?

2

Hello this is because the mesh is complex and running collisions implies that you test every single triangle.

So my best advice here is to not collide with the real mesh but instead create an invisible impostor (parented to the real mesh)