The HD tag
The red HD tag on film cards is a reminder that the official services stream in high definition, mostly 1080p.
4K and HDR
Dune: Part Two, Oppenheimer, Avatar: Fire and Ash and F1 shine in 4K with HDR and Dolby Atmos on a capable TV and plan. Aim for about 25 Mbps.
Settings
Choose High or Auto quality in each service's settings, and switch the TV to Filmmaker or Movie mode.