Unity 4.3 vs 4.5 physics2D.simulate performance

Hi all,

So I switched my game to the newest Unity version: 4.5.2f. I have a 2D game which consists of 1000 units all with a kinematic rigidbody / collider.

I simply do a:

 myTransform.position += myTransform.right * wanderSpeed * Time.deltaTime;
 

In 4.3 my performance is no issue at all I run at 200FPS. In 4.5 same scene, same project I run at 3 FPS. In profiler it seems Physics2D.Simulate is chunking away all the performance. I did see in the 4.5 changelog that there now is a Physics2D.Simulate property however if I set it to false I can't do any raycasting.

Unity 4.5 profiler screenie: