I'm sure a lot of you guys will be glad to hear that we're not on UE4 anymore. We're currently awaiting access to Source 2, but we don't know for sure when that will be - because, you know Valve Time etc.
Right now as an intermediary I'm getting stuff working on Source 1. Since CS:GO uses some Source 2 tech I can start binding some of that up and it shouldn't be a total waste of time.
I'll keep you updated.