yes, but partially :)… what you see if you click on the “GPU” ? 
In which direction I will point is what I described sometime within the forum. Latest here:
If you following the links I mentioned somethings like:
don’t be confused with these value of 26% … It shows often only the load of the 3D engine and not other engine on your graphics card.
I give also interessting link which more explain what you see ( MS Blog about Taskmanager ).
this is a wrong statement. You just have to made a correct configuration what the Taskmanager have to show you.