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Adaptive refresh for playing 24-fps video content

When WDDM 1.3 and later drivers play 24 frames per second (fps) video content on 60-Hz monitors, they must implement 48-Hz adaptive refresh to conserve power. In this scenario, the monitor switches from 60 Hz to a 48-Hz refresh rate to play back 24-fps video content.

Adaptive refresh reference

WDDM 1.3 and later drivers must implement the following DDIs for 24-fps playback:

A WDDM 1.3 and later user-mode display driver must implement the following functions in order to support a 48-Hz adaptive refresh rate: