My CPU usage is extremely high while connected to AC power, the CPU usage then lowers when I unplug the power adapter from the laptop.
Persistent logs while the AC power adapter is connected:
8/15/16 8:37:34.001 PM com.apple.CDScheduler[43]: *** LOG MESSAGE QUOTA EXCEEDED - SOME MESSAGES FROM THIS PROCESS HAVE BEEN DISCARDED ***
8/15/16 8:37:38.000 PM kernel[0]: ACPIBatteryManager: WARNING! fCurrentCapacity > fMaxCapacity. adjusted fCurrentCapacity from 3060, to 2329
8/15/16 8:37:38.559 PM powerd[52]: Failed to read current rating(0xe00002f0)