How to stop player walking physics?

So, I am trying to make a Superhero World game, and so far i am doing well, just one problem. How do I stop the player from sliding when running fast. Everytime my player's speed is set high and my player runs, when I try to stop it slows down and travels a bit more before coming to a full stop. I know I am not the best but I am just 13, Please help me if you know da wae.

game.Players.PlayerAdded:Connect(function(plyr)
plyr.CharacterAdded:Connect(function(char)
	char.Humanoid.WalkSpeed = 0
	char.Humanoid.JumpPower = 0
	char.HumanoidRootPart.Anchored = true
	char:WaitForChild("Torso",1).Anchored = true
	char:WaitForChild("UpperTorso",1).Anchored = true
end)
end)