Okay guys I think I found a solution for the banding. I did the update and had it. So I reset he Pram and the Nvram and bam its perfect now.
To reset it restart the macbook Pro. When the white screen appears hold down Command+alt+p+r Hold these 4 keys down and don't let go. he system will restart again with the boot sound. DO NOT LET GO. If you hold it down the system will keep rebooting. Let it boot 3 times. Hence you will hear the boot sound 3 times. On the 4th time let go of everything. System should be clean.
Hope this helped.
To reset it restart the macbook Pro. When the white screen appears hold down Command+alt+p+r Hold these 4 keys down and don't let go. he system will restart again with the boot sound. DO NOT LET GO. If you hold it down the system will keep rebooting. Let it boot 3 times. Hence you will hear the boot sound 3 times. On the 4th time let go of everything. System should be clean.
Hope this helped.