In reply to FesteringSore:
> Unfortunately the 2012 version
We're in the same boat and a factory reset won't fix it.
I'm going to check out some alternative operating systems such as this.
http://www.cyanogenmod.org/
http://www.howtogeek.com/162516/how-to-flash-your-nexus-s-or-any-other-andr...
I have an ageing ASUS TF300 from 2012 which got buggered up with ASUS's final update. That made the tablet extremely slow and ate battery power at a fantastic rate.
In the end I bit the bullet and taught myself how to Flash a ROM, which in layman terms means to install a new operating system. After a few attmpts with a few various ROMS, I settled on Cyanogenmod.
This ROM gave my ageing tablet a new lease of life. It won't get any more updates but that does not matter as there are no faults with it and it is working better that the official final update from ASUS.