Trembling Scroll

Hello,

I have a new MacBook Pro with excellent configurations (2.3 i7, 16gb RAM, 2gb video, 512 SSD, etc). However, I'm having a very annoying problem.

When I scroll something, or an icon on the dock start jumping, for exemple, the movement is very hard. The screen tremble, there is no fluidity. It is very strange, because any computer with much more modest configurations doesn't show this problem.

Any ideas?

Thank you!