Norton safety minder makes surf browsing too slow

Hello experts

 

I installed NSM a few weeks ago. At the beginnig surfing the internet was normal, but now it is sooooo slooow.  As soon as I disabeld Norton safety minder goes back to normal. 

 

I have seen some posts in this regard ("..... contact your ISP....") but I don't thinks this is the right solution. Is there another solution or should I consider other parental control software ?  NSM looked great at the beginning, I was thinking to but it for my children's computers.

 

Please, tell me that there is a fix for this.

 

Thanks

 

Parent with 4 children