With many considering the aim assist for gamepad users being a disadvantage, Epic Games is removing the legacy controls on March 13th. In it's current state, gamepad users are able to track users through obstructions like smoke and walls. Players with legacy controls currently enabled will have their controls set back to default settings. Until the change happens, players who wish to preserve their settings may use the "Copy from Legacy" option and then manually disable the "Legacy Look Controls".
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