I have some bad experience with my 1st gen Nexus 7, after updating to Lollipop. It made everything so slow, as to be completely useless as a device. I had to factory reset it.
My Moto G is less than a year old, and I have no desire to see it go through the same process. It is already a little slow on KitKat right now. However, the system update prompts shows up as many as 5 times within 1 continuous hour of usage. It says that it will ask me to set a time for future update prompts if I select 'No, thanks', but it doesn't.
How can I stop the update prompts from showing up all the time?