AGDCC: Unauthorized client 'PerfPowerService'

AGDCC: Unauthorized client 'PerfPowerService' (IOService:/AppleACPIPlatformExpert/PC03@0/AppleACPIPCI/BR3A@0/IOPP/GFX0@0/AMD9500ControllerWrangler)

(AppleGraphicsDeviceControl) AGDCC: Unauthorized client 'PerfPowerService' (IOService:/AppleACPIPlatformExpert/PC03@0/AppleACPIPCI/BR3A@0/IOPP/GFX0@0/AtiDeviceControl)

​

Any ideas?

Thx.