How do I optimize td enemies?

[MineGameIdle (Lego_Boi)]

Hello developers,
I am getting a lot of lag from a tds game I am helping develop.

How do I fix this?
Code:

local waypoint = game.Workspace.POINTS
local rrr = require(game.ReplicatedStorage._requirements)--just a module
local r = game.ReplicatedStorage.enemies.ExplosiveCrawler
local c = 1
local s = r:FindFirstChild("ADDPOS")
if s then s = s.Value end
r:SetPrimaryPartCFrame(workspace.Map.ENEMIESSPAWN.CFrame)
local oldhealth = r.Humanoid.Health
for i,v in pairs(r:GetDescendants()) do
	if v:IsA("BasePart") then
		v.CanTouch = false
		v.CanCollide = false
		v.CanQuery = false
		--v.Transparency = 1
	end
end
r.Parent =  workspace.WAVE
local hum = r.Humanoid
hum.Changed:Connect(function()
	if oldhealth > hum.Health then
		for i,e in pairs(game.Players:GetPlayers()) do
			pcall(function()
				e.leaderstats:FindFirstChildOfClass("IntValue").Value += 2
			end)
		end
		oldhealth = hum.Health
	end
end)
local oldr = r
-- DO NOT REMOVE GETTOUCHINGPARTS() AS THIS WILL BREAK THE FUNCTION CHECK
local function GetTouchingParts(part)
	local connection = part.Touched:Connect(function() end)
	local results = part:GetTouchingParts()
	connection:Disconnect()
	return results
end
local function check(model)
	local checkpart1 = GetTouchingParts(model["Left Leg"])
	for i,v in pairs(checkpart1) do
		if v.Name == "BasePartIg" then
			return true
		end
	end
	local checkpart2 = GetTouchingParts(model["HumanoidRootPart"])
	for i,v in pairs(checkpart2) do
		if v.Name == "BasePartIg" then
			return true
		end
	end
end
local function splitformathround(e)
	local two = string.split(tostring(e),".")[2]
	if not two then return e end
	local a = string.sub(two,1,1)
	local b = string.sub(two,2,two)
	local done = tostring(a.."."..b)
	return tonumber(string.split(tostring(e),".")[1].."."..math.round(tonumber(done)))
end
r.HumanoidRootPart.Anchored = false
r.HumanoidRootPart:SetNetworkOwner(nil)
r.HumanoidRootPart.Anchored = true
if r:GetScale() > 0.5 then
	while check(r) do
		r.PrimaryPart.CFrame = CFrame.new(Vector3.new(r.PrimaryPart.Position.X
			,r.PrimaryPart.Position.Y + 0.1,r.PrimaryPart.Position.Z))
		task.wait()
	end
end
local new = false
task.spawn(function()
	repeat
		task.wait()
		local czas = ((waypoint:FindFirstChild(tostring(c)).Position - r.HumanoidRootPart.Position).Magnitude/2)/2 / r.Speed.Value
		local pos = waypoint:FindFirstChild(tostring(c)).Position
		local newpos = Vector3.new(pos.X,splitformathround(r.HumanoidRootPart.Position.Y),pos.Z)
		r.PrimaryPart.CFrame = CFrame.new(r.PrimaryPart.Position, newpos)
		--local CFRAME = CFrame.new(r.PrimaryPart.Position, newpos)
		local oren = r.HumanoidRootPart.Orientation
		oren = Vector3.new(0,oren.Y,oren.Z)
		r.HumanoidRootPart.Orientation = oren
		local test
		local cframe = (CFrame.new(CFrame.new(newpos).Position)
			* (r.HumanoidRootPart.CFrame.Rotation))
		local tween = rrr.TweenService:Create(r.HumanoidRootPart,{czas, Enum.EasingStyle.Linear, Enum.EasingDirection.In}, {
			CFrame = cframe
		})
		tween:Play()
		tween.Completed:Wait()
		c += 1
		if r:FindFirstChild("Humanoid") == nil then 
			break
		end
		local oren = r.HumanoidRootPart.Orientation
		oren = Vector3.new(0,oren.Y,oren.Z)
		r.HumanoidRootPart.Orientation = oren
	until c == #waypoint:GetChildren() + 1 or r.Humanoid.Health == 0  or r.Humanoid.Health <= 0
	if c == #waypoint:GetChildren() + 1 then
		game.ServerScriptService.Function:Invoke(r.Humanoid.Health)
		r:Destroy()
	end
end)

All help is appreciated!

[Doomcolp (dxxmed)]

I mean for starters, it seems like you’re spawning an enormous chunk of enemies. I’m not going to suggest that you should do this but if y’all wanted to, you could have beefier enemies (enemies with more health).

From this line right here, I can assume that this is a server script.

@MineGameIdle

game.ServerScriptService.Function:Invoke(r.Humanoid.Health)

The server would use a bunch of resources compared to if the client were to do it. You should instead store positions for enemies on the server and then let the client do the calculations. Make sure you’re optimizing the data you’re sending so that you’ll be able have more enemies!

And so I’d like to introduce you to this post which does a better job at explaining what I’ve said (and more):

How we reduced bandwidth usage by 60x in Astro Force (Roblox RTS)

[image] Summary Hello! This is a summary of some of the bandwidth optimizations we made in Astro Force, our Roblox Accelerator project (link here)! Astro Force is a real-time strategy (RTS) game @loravocado and I are working on, and the goal is to have a system efficient enough to handle hundreds of independent units. While a lot of these bandwidth optimizations are very specific to our game, I thought it’d still be cool to share what we did! This is also my first time doing bandwidth optim…

[russkiychelik02 (cannon)]

You could try to make a system, that holds every enemy on server like data-table, and replicates this data (like position of NPC or his health) to every player, and then player`s client draws every NPC like a model with animations, movement and etc.