How Important is URL Advisor (and hence Web script injection setting)?

[Consultant]

I'm very sensitive to maximizing performance.  Since installing Kaspersky, I noticed when I go to a new website (I use MS Edge) for about a good second or so I see in the bottom bar "Waiting for {a Kaspersky website address}" then the page loads.  I understand this is the web script injection setting doing this that says it is required for the URL advisor to work.

I've been a SysAdmin for 30+ years and I can identify a shady website when I see it.  In addition I would assume Kaspersky, even with this feature turned off, would block execution of any scripts or downloads that have virus/malware code.  

Is the URL Advisor critical to preventing virus/malware infection or is it more an 'icing on the cake' feature that is primarily more informative than actually adding significantly better protection from infection?

Edited July 27, 2023 by Consultant

[Xzz123]

I always disable inject script into website function right after I install K.

personal opinion