Hi guys just wanted to let you know that this problem is solved.
Motu support let me try the new Beta firmware and driver that are coming out soon and all problems disappeared,even on usb 3.0 it works very stable with all the benefits.
For those who where in the same boat as me please just be a little bit more patience, it`s worth it.
I tried very hard to make it crash but nothing not a single crash, solid as a rock.
Just wanted to let you know as well that Motu support was with me all the time,thanks guys.
Peace