Yeah I think some of those advantages are thanks to F-Secure taking a minimal AV + BB (process injection) approach. I think having the full blown network filter in ESET helps them a lot in intercepting and scanning secondary payloads. Kaspersky and even Windows Defender ATP uses a few different kernel drivers to more closely monitor application activity across the system. Norton/Symantec has a driver that sits between the TCP/IP stack driver and the network card driver which performs IPS and other things.Just trying F-Secure in my main machine and again I am impressed by how good and fast the installation process is and by the fact that it will auto-update and make sure everything is fine (I am looking at you Norton).
I think it has the lowest system impact in my computer, everything is so smooth that I cant tell that it is running at all.
I really like F-Secure privacy/security commitment and the product itself is very well designed too, there is no bloat or complicated settings, it just works.
Each one of those components I mentioned has been implicated in some BSODs, weird networking lags around sleep/wake, and mandatory reboots (at least for uninstallation).
Historically F-Secure Internet Security tried to do all of this stuff too and became a huge bloated mess. Today's F-Secure came out of the UltraLight beta concept, and keeping it minimalistic was a goal for them.