The window frame has steps when move it even we installed Freescale's X-window driver "gpu-viv-bin-mx6q_3.0.35-4.1.0_armel.deb" already.
How customer make sure whether the gpu H/W acceleration is enabled properly? ex: to check /var/log/Xorg.0.log? or something else we can check?
I strongly advise you to use the last Yocto Project-based builds. We have some machines with images ready for use online[1] and you might want to try the fsl-image-multimedia