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[Lucas Ward]

Rollback netcode fundamentally redefined what “lag-free” online play means in fighting games, and the shift from delay-based to prediction-based architecture is the single most important netcode evolution of the last decade. Delay-based systems worked by stalling both clients until the opponent’s input frame arrived, which meant you were always playing at the speed of your weakest connection—typically 100ms+ of artificial input delay that completely destroyed the frame-perfect execution that competitive FGC demands.

Eddie Loke’s GGPO library changed the game by introducing optimistic prediction with rollback: each client simulates the opponent’s inputs immediately based on their best guess, and when the?

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"0.03ms OLED response renders ghosting completely obsolete."

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