[QUOTE=OverRated_AU;697385]
I know you state you won’t be adding in Steam Authentication but looking at this its pretty straight forward if you did add it in? https://wiki.unrealengine.com/Using_Steamworks_with_UE4#Enabling_Steam_Authentication
Thats not “enabling it”, you have to merge his pull request into a source copy of the engine, build it, and then use his extra variable when hosting the server then. His pull request changes a lot of things on the back end of the steam subsystem to get authentication working. Most of what he changed is not plugin accessible as well, so it would involve re-creating large sections of the Steam Subsystem or even entirely remaking it to get it working with a plugin.
Would rather get it feature added into the engine itself as that is where it should be to begin with.
Edit If you follow his tutorial and merge his pull request and add that boolean to your game mode this plugin would work normally with it except it would have steam authentication as well, can skip the c++ session creation.