How does Multicast RPC handle actor relevance?

Development Programming & Scripting
1

I found that actor replication is intelligently adjusted according to relevance.

This seems to save network bandwidth by adjusting replication between clients that are not seen as a problem with distance or location.

I want to know if the same replication throttling algorithm also applies to multicast RPC. For example, if you run a large, dedicated server with 100 connections, does multicast RPC called from the server request remote function calls to all clients?

2

The RPC won’t fire on clients for whom the actor that fired it is not relevant. So, if it’s something that sets a state that should be visible the next time that actor becomes relevant to those clients again, consider using replicated variables instead.
This post, from Alexander, is a good and brief explanation: OnRep vs multicast - #9 by TheJamsh - C++ Programming - Unreal Engine Forums