New CPU spinning problem
So for anybody who starts suffering from high cpu usage starting June 27th 2016, it would appear the 9.2.56 version of google play services introduced this problem.

I have an "034" series device...

http://www.apkmirror.com/apk/google-inc/google-play-services/google-play-services-9-2-56-release/ 


explains what that means.

And that would appear to be the problem and I probably can't do anything but prey they fix it.