I think from my recent experience in my computer that Windows Defenses as Smart App and Ransomware are been disabled after Norton Installation and it is opening my computer for threats. So it is performing better without Norton and this is weird.
An option from my consumer thinking might be to not disable these options and let them remain ON after Norton Installation.
Smart App could be turned off or on, always the consumer wants to do it.
It is helping a lot to block false drivers trying and many times messing my Dell computer.