the quake engine and moreso the mod called "unlagged" had a version of this. they would try to infer what an object's motion would be a few frames ahead of wha

the quake engine and moreso the mod called "unlagged" had a version of this. they would try to infer what an object's motion would be a few frames ahead of what's coming in from the network. the clients (iirc) would only correct what's in the scene graph if the server disagreed. unlagged was a super aggressive version of this that let other clients be the deciding factor. it was especially useful (or frustrating) for instagib over bad connections.