local FpsLabel = script.Parent
local Heartbeat = game:GetService("RunService").Heartbeat

local LastIteration, Start
local FrameUpdateTable = { }

local function HeartbeatUpdate()
    LastIteration = tick()
    for Index = #FrameUpdateTable, 1, -1 do
        FrameUpdateTable[Index + 1] = (FrameUpdateTable[Index] >= LastIteration - 1) and FrameUpdateTable[Index] or nil
    end

    FrameUpdateTable[1] = LastIteration
    local CurrentFPS = (tick() - Start >= 1 and #FrameUpdateTable) or (#FrameUpdateTable / (tick() - Start))
    CurrentFPS = math.floor(CurrentFPS)
    FpsLabel.Text = CurrentFPS .. " FPS"
end

Start = tick()
wait(1)
Heartbeat:Connect(HeartbeatUpdate)

--code made by randomStuffz
--modified by kurt faircloth/kurtfan5468