title, if you lower the replay speed it also slows down the ghost but still going for the same amount of frames
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reasons why this would be goated

during fast motion like crazy glitches, launches, or some mods instead of seeing ur ghost teleport out of existence you could see it for a few frames instead
beginners- trying to understand whats happening and maybe the ghosts are moving too fast and slowing the ghost down will help them understand the turn better
replaymaking- makes it easier to see when rotating at high speeds in tricks or trying to do very technical parkour shit

itd also be balanced in matchmaking because youll see less full turns the slower you go, maybe not even a full turn if you go too low