[faitswulff]

Is this the same definition for "rollback" netcode? https://en.wikipedia.org/wiki/GGPO#Design

> GGPO uses a netcode technique called “rollback”. Rather than waiting for input to be received from other players before simulating the next frame, GGPO predicts the inputs they will send and simulates the next frame without delay using that assumption. When other players’ inputs arrive, if any input didn’t match the prediction, GGPO rolls back the state of the game to the last correct state, then replays all players’ revised inputs back until the current frame. The hope is that the predictions will be correct most of the time, allowing smooth play with minimal sudden changes to the game state.[6][7] The system in itself is highly similar to client-side prediction, but applied to a peer-to-peer setup.

[alvarosevilla95]

Yes. This is a custom implementation, not CGPO itself, but the concept is the same.