Is there anyway to make my timer bit better?

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1

i’ve made an elevator system where you can join with multiple players at once
and once enough players are inside it starts a timer

the timer relies on heartbeat to count
i’m just wondering on how to fix it cause it creates a heartbeat event when time the timer starts on the elevator and which it might cause some lag

here’s the place
teleport_place.rbxl (80.1 KB)

--here's the code for it
local ServerStorage =  game:GetService("ServerStorage")
local ReplicatedStorage = game:GetService("ReplicatedStorage")

local CollectionService = game:GetService("CollectionService")
local RunService = game:GetService("RunService")

local SafeTeleport = require(ServerStorage:FindFirstChild("SafeTeleport"))
local Zone = require(ReplicatedStorage:FindFirstChild("Zone"))
local teleportGui = ServerStorage:FindFirstChild("TeleportGui")

local function teleportModule(teleporter)
	local zone = Zone.new(teleporter.Zone)

	local teleGui = teleportGui:Clone()
	teleGui.Parent = teleporter
	teleGui.Adornee = teleporter

	local frame = teleGui.Frame
	local timeText = frame.Time
	local playerText = frame.Players

	local placeId = teleporter:GetAttribute("PlaceId")
	local maxPlayers = teleporter:GetAttribute("MaxPlayers")
	local minPlayers = teleporter:GetAttribute("MinPlayers")
	local timerValue = teleporter:GetAttribute("Time")

	local partyPlayersList = {}
	local timerConnect = script.Changed:Connect(function() end) timerConnect:Disconnect()
	local debounce

	local function updateTimer() 
		timeText.Text = string.format("Time: %i", teleporter:GetAttribute("Time")) 
	end
	local function updatePlayer() 
		playerText.Text = string.format("Players: %i", #partyPlayersList) 
	end

	updateTimer()
	updatePlayer()

	local function timer()
		if time() < debounce + 1 then return end --if current time is greater than debounce + 1 second
		teleporter:SetAttribute("Time", teleporter:GetAttribute("Time") -1) 
		updateTimer()
		debounce = time()
		if teleporter:GetAttribute("Time") > 0 then return end  --if time is less or equal to 0 
		timerConnect:Disconnect() 
		SafeTeleport(placeId, partyPlayersList) --teleports players
		teleporter:SetAttribute("Time", timerValue)
		updateTimer()
	end

	local function addPlayer(Player)
		if table.find(partyPlayersList,Player) or #partyPlayersList >= maxPlayers then return end --if player not in part or if party is less than max players
		table.insert(partyPlayersList,Player)
		updatePlayer()
		if #partyPlayersList < minPlayers or timerConnect.Connected then return end --if party is greater or equal to min players or the timer isn't running
		debounce = time() timerConnect = RunService.Heartbeat:Connect(timer)
	end

	local function removePlayer(Player)
		table.remove(partyPlayersList, table.find(partyPlayersList, Player))
		updatePlayer()
		if #partyPlayersList >= minPlayers then return end --if party is less than min players
		timerConnect:Disconnect()
		teleporter:SetAttribute("Time", timerValue)
		updateTimer()
	end

	zone.playerEntered:Connect(addPlayer)
	zone.playerExited:Connect(removePlayer)

end

for _, teleport in pairs(CollectionService:GetTagged("teleporter")) do
	teleportModule(teleport)
end