Faster

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid")

local gui = Instance.new("ScreenGui")
gui.Parent = player.PlayerGui

local frame = Instance.new("Frame")
frame.Size = UDim2.new(0, 180, 0, 120)
frame.Position = UDim2.new(0.5, -90, 0.5, -60)
frame.Parent = gui

local titulo = Instance.new("TextLabel")
titulo.Size = UDim2.new(1, 0, 0.3, 0)
titulo.Text = "Velocidad"
titulo.Parent = frame

local subir = Instance.new("TextButton")
subir.Size = UDim2.new(0.45, 0, 0.3, 0)
subir.Position = UDim2.new(0.05, 0, 0.5, 0)
subir.Text = "+"
subir.Parent = frame

local bajar = Instance.new("TextButton")
bajar.Size = UDim2.new(0.45, 0, 0.3, 0)
bajar.Position = UDim2.new(0.5, 0, 0.5, 0)
bajar.Text = "-"
bajar.Parent = frame

local velocidad = 16

subir.MouseButton1Click:Connect(function()
	velocidad = math.min(100, velocidad + 5)
	humanoid.WalkSpeed = velocidad
end)

bajar.MouseButton1Click:Connect(function()
	velocidad = math.max(0, velocidad - 5)
	humanoid.WalkSpeed = velocidad
end)