I had enabled ‘Show refresh rate’ in developer option.
I have noticed that working of Dynamic Refresh Rate depends on Brightness of the display.
Dynamic refresh rate starts working at 56% of brightness with range of 10Hz, 90Hz and 120Hz and at peak brightness gets down to even 1Hz. At <56% brightness, the refresh rate is at constant 120Hz.
Is this an issue with the software or is this how Ltpo displays work?
How is the battery life extended if you need to have peak brightness for slow refresh rate? It seems redundant.
Any explanation?