High CPU usage with Android emulator (qemu-system-i386.exe)

Question

The emulator qemu-system-i386.exe cpu usage almost constantly running between 7~9

Android studio 2.1 Android SDK Tools: 25.1.3 Host Operating System: Windows 7 - i7

Answer 1

On Mac I noticed that the emulator was using over 100% CPU after my laptop went to sleep. Turning the audio off as Benjamin suggested didn't fix that problem.

Restarting the simulated device by long-pressing the power button on the emulator works for me.