What minimalist free antivirus do you recommend for an Internet cafe?

Question

Antivirus

Hello.
An Internet cafe needs an antivirus, which does not make itself felt at all. In fact, all you need is real-time protection and convenient management of trusted files (to add directories, files, etc.).
Avira - terribly slows down the system.
360 - advertising in the free version.
Comodo..?

Answer 1

Maybe Windows Defender? It is available in all Windows, starting from 7, and is no worse than other typical "watchman" antiviruses, but it has the advantage that it is better integrated into the OS, and therefore annoys it less. Those. here it is just the least noticeable.
But I don't know the specifics of an Internet cafe, so if it doesn't work, call me.

Answer 2

avast for 1 year for free.
* Previously, remove other antiviruses through the "Add or Remove Programs"!
It is not clear what you meant by the word "which does not make itself felt at all."
I always install 2ipguard - it's not an anti-virus, but it gives a signal that something has registered in autoload. Usually they are trojans. It does not replace antivirus, but when nothing is available, it will do.