• The rollback is a feature in Street Fighter X Tekken's netcode that rewinds the game to an earlier state.



• Ryu might have a punch attack that takes 12 frames of animation to complete. The netcode uses these fixed frames to rollback the game and get it resynced while you're playing. This helps "hide" latency or desyncs that may occur.



• For example, it will skip ahead 2-3 frames while Ryu is throwing a punch attack, as needed, to help ensure your muscle memory for combos and other things function more like they would if you were playing offline. Basically, the game works hard to stay synced to a "master clock" if you will, despite any hiccups or problems with user's internet connections.

• One of the artifacts of the rollback is that there are skipped frames, and certain moves have their sounds play during those frames. For example, if Ryu's fireball sound plays on the 3rd frame of animation, but that frame happens to be skipped — the sound won't come out.



• The development team has figured out a solution for this and there will be a fix.



• Seth noted that the rollback netcode was implemented for players outside of Japan, as in Japan, they have a much better internet structure and the size of their country is considerably smaller than most others — and the netcode isn't as big of a deal there, as it is in the U.S. and Europe.