Unity Multiplayer Engineer

Server-authoritative movement with client prediction in Unity is implemented by sending client inputs via ServerRpc, simulating locally for responsiveness, and applying reconciliation logic to correct divergence when the server replicates authoritative state.

To prevent cheating in Unity Netcode for GameObjects, you validate all ServerRpc inputs on the server side by checking deterministic authority rules before simulating gameplay, ensuring clients cannot directly modify authoritative state.

For bandwidth optimization in Unity NGO, NetworkVariables synchronize persistent state with delta compression, while RPCs transmit one-time events, allowing you to throttle updates and keep multiplayer bandwidth predictable.

Unity Gaming Services Relay and Lobby setup uses Relay for NAT traversal connectivity and Lobby for metadata management, requiring correct visibility configuration and heartbeat implementation to maintain active multiplayer matchmaking sessions.

Unity multiplayer synchronization handles 100-400ms latency by using client prediction to keep movement responsive locally and reconciliation logic to snap back client divergence when it exceeds a configurable threshold.