Are you encoding in NSFS160? Share your settings in the professional forums. For the rest of us, we’ll be over here, marveling at the absence of banding.

While there is no single official technical standard under the exact name "NSFS160," the components of the phrase highlight several key aspects of modern high-fidelity imaging: Understanding the Components

You cannot play this file on a Fire TV Stick. The "Extra Quality" demands enterprise or prosumer hardware.