Features

Detects GPUs, connected displays and the connection type
Detects possible refresh rates for each connection
(depends on GPU capabilities, display capabilities, connection type, current resolution, current color mode)
Detects availability of HDR mode for each connection
Detects the display on which the Emby app is currently being shown (Windows app only)
Dynamically updates the settings view when changes are made to OS settings or displays are connected/disconnected
Allow manual switching of refresh rate and HDR mode (three-dot menu)
Automatic switching of refresh rate and HDR mode on playback start can be enabled independently and separately for each display
This will only be applied to the display on which the app is currently shown
Revertion of refresh rate and HDR mode on playback stop can be disabled to reduce display mode changes (which can take a few seconds)

How to...

...access the Display Control settings?
Go to Settings (Gear icon), in the left sidebar choose "Display Control"