The last piece is to verify the pixel depth. If it is 4:2:0 that sucks. If it is 4:2:2 that is to be expected. The bandwidth on HDMI does not allow more than 10 bit/12 bit 4:2:0 60hz. What player are you using? PC? Did you check your display settings on your device?Bad news. I was showing at 30fps. When I set at 60fps, the banding shows up. It is very similar to the pictures you posted. Ugh. Not the news I was hoping for.