AIProtection: Worth the Overhead?

Hi,

Since April 18, 2019 I've had 19 Malicious Site Blocking hits. They all seem to have been a byproduct of normal Internet usage.

Is there a speed/performance overhead that would make such routine blocking (something I'd think my AV software would do anyways) not worth it? Or is AIProtection a zero-overhead service?

Thanks,
Anton