Comment 2 for bug 550449

I don't think clutter will improve the situation. Goocanvas uses Cairo, which in turn uses XRender, which is hardware-accelerated by nearly all drivers. Clutter on the other hand uses OpenGL, and no one knows if it works without 3d acceleration. Also see this thread: http://old.nabble.com/clutter-or-goocanvas-for-PiTiVi-td17221802.html

Moreover, scrolling and working with clips are OK, just zooming is slow, thus it might not be Goocanvas' fault.