25/6/2020
When we are working on a big scene, we find out that the game performance drop rapidly. The maximum frame per seconds (FPS) on my computer is only 9 FPS, which is extremely low FPS and it disturbs my working process due to the big latency.


To reduce the CPU usage, I temperately disable the shadow on the scene in order to improve my working environment. But I am not sure if this problem happens on editor only or also happens on the final game output.
So, we are now exploring the method on reduce the CPU usage of the game via the following methods:
- Using baked lightmap instead of real time lightmap
- Applying occlusion culling reduce useless rendering
- Setting LOD to 3D model to replace the current model to a lower resolution model with lower polycount
- Setting animation to ‘cull completely’ so that it will not rendering it when it is not inside camera view
- Avoid using Update() function to call the method