Is transforming static colliders really damage performance? with test

Hi!
I'm a newcomer to Unity and I just finished the Roll-a-ball tutorial.
But the concept "transforming static colliders cause performance loss" still confuses me.

I've checked the doc, which says:

But in this little HelloWorld, I can feel that Static Colliders are faster than Dynamic Colliders.
That's against what I've learned. So I made a small test (not so small for my machine )
Put 23,104 Pick-Ups (rotating cubes) in the scene, with Rigidbody, play, and use the built-in Profiler to watch performance status. Then without rigidbody.
I tested it twice, results are preferring Static Colliders:







The diffrence in Physics Time is quite obvious. And fps differs too (~2fps vs ~3.5fps).

I also tested moving cubes, results are same (and both more laggy ).

My Guess & Questions:
A. The new version of Unity(5.3.5) have already did some optimization on this issue. So when you don't need physics, just don't use Rigidbody?
B. Maybe it's just because my PC's graphic card have somehow accelerated it (PhysX)?

How's transforming static/dynamic colliders works for your project's performance?
Looking forward to answers. Thanks in advance!

 

http://forum.unity3d.com/threads/pr...ect-is-not-set-to-active.364876/#post-2368662

Also, the fastest would be to not move those colliders at all. Just because you want to rotate the actual mesh, doesn't mean you have to rotate the collider as well.

 

4.x has different rules than 5.x. Roll a ball is a 4.x tutorial. 5.x removes penalty for transforming a collider.

Anyway premature optimisation.

 

I guess the real issue here is that the docs need some updating.

 

It would be odd tbh. Also "feel"? use profiler! no need to guess.

 

Thanks AcidArrow! Thanks hippocoder! It's amazing how soon you have replied! Good answers, really help!

 

NP - you put effort into your post so people should take effort to reply and assist you.

 

Another reference here:

http://blogs.unity3d.com/2014/07/08/high-performance-physics-in-unity-5/

Yes, documentation needs an upgrade on this.