Slow Phisics on device

Hello. I apologize for my English, I use a translator.

I have a problem with physics. For example, I've made ??two videos.

This video from the device

youtu.be/LFNT9mx1wY8

And this from a PC

youtu.be/jB-rbvzpZB8

As seen on the PC, all is good, but there is a problem on the device - the physics is delayed. Because of what the boxes go into each other. Then they jump appears with force. On Iphone 4S same problem.

I am not quite sure why this is happening, it could just be due to the slowness of the device.

However, for a precision-based puzzle game like this, I would strongly suggest not using physics, but something else, either your own custom movement or maybe the platformer behavior with no controls. That way it will be a lot easier to predict the outcome of the puzzle.

Devices did not seem to slow. This Nexus 7 on Tegra 3 and the iPhone 4S. When showing FPS, they are not slowing down. Hold about 60. It is strange that on the PC, all is normal. I understand that the PC is much faster, but why do not slow down the FPS on the device.