How to Connect our Kaspersky Antivirus as Scan engine to nextcloud?

Hello to all
we have Nextcloud as one-promises cloud with 2 T data. we want Connect our Kaspersky Antivirus as Scan engine to nextcloud? I read how to do that in Kaspersky

1- which port should be used ?
2-what is Stream Length?
3- Because users are constantly uploading files to the server, what pressure does it put on the server and do we need to have a separate server just for that?