the liftoff problem on my m8000x seems to be solved.
What i did :
=> assign PTP function to a mouse button
=> click this button => the mouse freeze (only X and Y moves)
=> unplug the mouse + plug
=> HOLD the profil button for 5 seconds as indicated here :http://www.gigabyte.fr/support-downloads/faq-page.aspx?fid=1834&pid=3314
I've not yet restart the computer to see if i have the same problem as you, i'll tell you it ASAP.
Did anyone know exactly what this action (hold profile button) do ??