Norton Lifelock and High Sierra
I installed Norton Lifelock On my iMac which has created performance problems including frequent shutdowns requiring restarts. I am running High Sierra. IMac is 6 years old but otherwise works great. I have uninstalled and then reinstalled Norton 3 times with the same poor result. Did I make a mistake with Norton? Is there something else on the iMac likely interfering with Norton?
iMac 21.5", macOS 10.13