For scalability, reliability and cost reduction, virtual environment has been evolved from the client-server model, peer-to-peer model, to the virtual node-based hybrid model. W h e n objects are hosted by unreliable nodes, replication is applied for reliability. A n important problem is to maintain replica consistency in interaction, while to minimize interaction latency i n play. We propose a fast state machine replication model to address this issue. Besides correctness, our simulation shows the achievable high responsiveness. The w o r k can also be applied i n augmented and mixed reality systems, where hundreds of users interact w i t h virtual elements on a common platform.