Hi, how do you display the 1080p pattern, is that pattern designed for video levels?
The pattern you are using is a video stream or just a picture?
I have many ramp patterns to my calibration disk:
https://displaycalibrations.com/patterns_overview.htmlConsumer TVs internal processing is working in video levels, some display models when you feed them with Pictures (so Data levels), or PC full range signal (Data levels), it can add banding, while they are working fine when you send YCbCr patterns (video levels).