Will Norton Security 2.0 slow my PC down?

I've heard Norton slows down most PCs but I want to know what you users actually think.

My specs: AMD FX-8320, 8GB RAM, Kingston SSDNow 240GB and WD Blue 1TB, AMD R9 270x 2GB.

Currently, I'm using Kaspersky Total Security and performance is fine. What do you think?