Corebrightnessd
MacBook Pro with Retina display, macOS High Sierra (10.13.1), A1502
MacBook Pro with Retina display, macOS High Sierra (10.13.1), A1502
This process somehow relate with NightSwift, when NightSwift is on and use automatic mode (from dusk to dawn).
I've disable NightSwift and everything became normal.
I have the same problem and your advise is working but it should be fixed becouse actually I want to use NightShift in automatic mode.
Corebrightnessd