NVP slows IE by 26 secs. IE keeps asking me to manage add-ons. How risky is it to disable NVP?

Norton Security Suite's Vulnerability Protection causes my IE browser to run slowly.  According to the  IE pop up that keeps telling me to manage my add-ons for better speed and performance, NVP slows down my browser by 26 seconds.  I have Windows 8.1 but have not had any of the compatibility issues that others seem to have had.  My question is this:  Can I disable NVP without putting my computer too much at risk?  Twenty-six seconds is way too much and I am not going to use NVP if I can speed it up or supplement it with another program.  I hope all you smart minds out there can give me a clue, here.  Thannk you!