It just occurred to me that this might be relevant to this thread. A week or so ago I ran into an issue with replicated ProjectileMovement components, where releasing them from a fast-moving vehicle in networked games caused them to stutter on all client machines. I implemented a poor man’s client-side prediction to smooth the movement out quite a bit. There is no rewind/replay, so it’s imperfect, but it feels like a step in the right direction. I am planning to revisit this in a future iteration. Thanks to user HateDread for the idea.
Details: Replicated projectile movement components are choppy - World Creation - Unreal Engine Forums