I am having the same issue on my Asus padfone x. "Unfortunately Google Play Services has stopped"
I have already tried to reboot, uninstall app updates to all GAPPS, Factory Reset. I still get the error. It pops up about every 6 seconds.
All of the Google apps work fine, I just keep getting this error popping up.
Asus Padfone X, no root, locked bootloader, Android 4.4.2