How to block porn with Webroot security anywhere?

I found that it doesn’t have any web monitoring features to block adult contents, category wise like Sophos home or Cold Turkey. But it is good for my aging pc. 

I am looking for security which doesn’t slow my already slow pc with porn blocking capability. 

Thanks. 

Please don’t recommend host file editing, google safe search, etc. They can be easily bypass. I want Cold Turkey like features in security software.