Good effort I must admit.
The effects of the system seem to work (like the dashboard motion on revealing and hiding it).
It's not the mouse-tearing that bothers me.
But what are those irrelevant spots tha come from nowhere and at any time...usually when I move a window or open a window? Is there a way to remove them...Is it because the drivers are not fully supporting at least the basic motion on the desktop? I hope there is someone who knows about that.

the mouse tearing should bother you because it looks stupid

Actually, you're right...
I didn't think that we were talking about the same thing.
Those spots I described are the famous "mouse tearing".
I didn't know it was called like that.

As I know people are working on that problem. I hope it will be solved soon.
For now, patience