WPF Hardware Acceleration

One of my biggest concern about myBoard are performance and framerate issues, and myBoard is definetely not as fluid as I want, and this is mainly due to the fact that myBoard make extensive use of BitmapEffects for visual effects such as shadow, or glow.
These effects are software rendered, which means that the CPU is in charge of images effects calculation in addition of all myBoard business logic. Even on my Dual Core E8400 + 2Go of ram, myBoard framerate [...]