Few my last mods were crashed in cause of wrong use of remote roles.
The problem is I don't know when actor must have remote role Simulated Proxy and when - ROLE_DumbProxy, or something like that.
Yep, simple truth. Networking in UE is one of the most cryptic topics (and most interesting in my opinion)You're basically asking for someone to explain to you a topic that requires an entire BOOK. I'd recommend you start off the unreal wiki for the basic concepts, try a few simple mods/tuts and ask specific questions later.