Client Prediction (speedhack anti-cheat)

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I spent a long time trying to figure out the question “how to solve the problem with cheaters who change the speed in a multiplayer game?”. I finally solved it.
It took a long time, but I found a solution.

add this in your “DefaultGame.ini”:

[/Script/Engine.GameNetworkManager]
bMovementTimeDiscrepancyDetection=true
bMovementTimeDiscrepancyResolution=true
MovementTimeDiscrepancyMaxTimeMargin=0.20f
MovementTimeDiscrepancyMinTimeMargin=-0.05f
MovementTimeDiscrepancyResolutionRate=1.0f
MovementTimeDiscrepancyDriftAllowance=0.0f

I really hope this helped someone!