I also built a similar engine to boardgames.io using the Delta-update approach, which you can try at acos.games. Deterministic lockstep is like trying to build

I also built a similar engine to boardgames.io using the Delta-update approach, which you can try at acos.games. Deterministic lockstep is like trying to build a house with wet paper. You'll need to stack and compress millions of layers to make it solid. Delta-update while not the best for bandwidth, is the cheapest for moving forward. I don't want to waste time fixing desync issues, when I can be creating more games and more features. I'm still writing about my experience and showing exactly how I built my Delta-update networking model, but its working really well so far.