Low FPS in a "FPS Game"

Questions & Answers
1

My game stats before adding a gun is as follow:
31032-before.jpg

And after adding a gun it is as:

31033-after.jpg

All objects in the scene are static and have lightmaps except gun…
Configuration of my system is

Core i3 3.30 GHz 8 GB RAM and 2Gb Nvidia GT610

2

Does the gun have a Collider? Updating Collider on animating object is pretty expensive since it should update the physics every frame. But if you disable the physics of the collider by enabling “IsTrigger”, the problem should solve. You would have to check the physics yourself, if you need it though.