Help me: My application is in WPF (DirectX)

Every time I change the ownership of the xml, there is a small displacement of the screen. Does anyone know of a complement to (DirectX)? Because it amounts to simultaneously screen, so differences may occur frenquentes display (note the difference is mm).

Additional Information:

WPF Grids and not canvas.

details:

Each time you compile the Debug is the minimum difference image (1%), I believe it is WPF.

I am subject to any hint. Thank you al