Render:Disconnect() not working?

[ImNotKevPlayz (Scriptorial)]

Here is my code:

local UIS = game:GetService('UserInputService')
local Player = game.Players.LocalPlayer
local Char = Player.Character
local Humanoid = Char.Humanoid
local Animator = Humanoid:WaitForChild('Animator')
local PunchAnim = Instance.new('Animation')
PunchAnim.Name = 'PunchAnimation'
PunchAnim.Parent = Char
PunchAnim.AnimationId = 'rbxassetid://6741414062'
local ChopAnim = Instance.new('Animation')
ChopAnim.Name = 'ItemChop'
ChopAnim.Parent = Char
ChopAnim.AnimationId = 'rbxassetid://5686023191'
local ReplicatedStorage = game:GetService('ReplicatedStorage')
local Mouse = Player:GetMouse()
local InstancesFilter = {}
local Camera = workspace.CurrentCamera
local Count = 0
local RunService = game:GetService('RunService')
local ServerStorage = game:GetService('ServerStorage')
local RunService = game:GetService('RunService')
local Placing = false
local Model
local Render
local Rotation = 0
local RotationIncrement = 30
local RangeHitBoxFound = false

for i,v in pairs(workspace:GetChildren()) do
	local Found = v:FindFirstChild('Range')
	local Found2 = v:FindFirstChild('RangeBox')
	
	if Found then
		table.insert(InstancesFilter,Found)
	elseif Found2 then
		table.insert(InstancesFilter,Found2)
	end
	Count += 1
	
	if Count == 1000 then
		RunService.RenderStepped:Wait()
		Count = 0
	end
end

workspace.ChildAdded:Connect(function(Child)
	if Child:FindFirstChild('Range') then
		table.insert(InstancesFilter,Child.Range)
	elseif Child:FindFirstChild('RangeBox') then
		table.insert(InstancesFilter,Child.RangeBox)
	end
end)

local function MouseTarget()
	local Parameters = RaycastParams.new()
	Parameters.FilterDescendantsInstances = InstancesFilter
	Parameters.FilterType = Enum.RaycastFilterType.Blacklist
	local MouseVector2Pos = UIS:GetMouseLocation()
	local UnitRay = Camera:ScreenPointToRay(MouseVector2Pos.X,MouseVector2Pos.Y)
	local RaycastResult = workspace:Raycast(UnitRay.Origin,UnitRay.Direction * 500,Parameters)
	if not RaycastResult then return nil end
	return RaycastResult.Instance
end

local function MouseHit(Structure)
	if Structure then
		local Parameters = RaycastParams.new()
		Parameters.FilterDescendantsInstances = {Structure}
		Parameters.FilterType = Enum.RaycastFilterType.Blacklist
		local MouseVector2Pos = UIS:GetMouseLocation()
		local UnitRay = Camera:ScreenPointToRay(MouseVector2Pos.X,MouseVector2Pos.Y)
		local RaycastResult = workspace:Raycast(UnitRay.Origin,UnitRay.Direction * 500,Parameters)
		if not RaycastResult then return nil end
		return RaycastResult.Position
	else
		local Parameters = RaycastParams.new()
		Parameters.FilterDescendantsInstances = InstancesFilter
		Parameters.FilterType = Enum.RaycastFilterType.Blacklist
		local MouseVector2Pos = UIS:GetMouseLocation()
		local UnitRay = Camera:ScreenPointToRay(MouseVector2Pos.X,MouseVector2Pos.Y)
		local RaycastResult = workspace:Raycast(UnitRay.Origin,UnitRay.Direction * 500,Parameters)
		if not RaycastResult then return nil end
		return RaycastResult.Position
	end
end

UIS.InputBegan:Connect(function(Input,GameProcessed)
	if not GameProcessed and Input.UserInputType == Enum.UserInputType.MouseButton1 and ReplicatedStorage.Completed.Value then
		if Placing then
			Placing = false
			Render:Disconnect()
			ReplicatedStorage.PlaceStructure:FireServer(Model.Name,Model.PrimaryPart.CFrame)
			Model:Destroy()
			Model = nil
		else
			local Target = MouseTarget()

			if Target == nil then return end
			local MousePos = MouseHit()
			if MousePos == nil then
				MousePos = Mouse.Hit.p
			end

			ReplicatedStorage.ChopSlashPunch:FireServer(MouseHit(),Target)	

			if Target.Parent.Name == 'Tree' then
				if not Player:GetAttribute('Cooldown') then
					local AnimTrack
					if Char:FindFirstChildWhichIsA('Tool') then
						AnimTrack = Animator:LoadAnimation(ChopAnim)
					else
						AnimTrack = Animator:LoadAnimation(PunchAnim)
					end
					AnimTrack:Play()	
				end	
			elseif Target.Parent.Name == 'Zombie' then
				if not Player:GetAttribute('AttackCooldown') then
					local AnimTrack
					if Char:FindFirstChildWhichIsA('Tool') then
						AnimTrack = Animator:LoadAnimation(ChopAnim)
					else
						AnimTrack = Animator:LoadAnimation(PunchAnim)
					end
					AnimTrack:Play()	
				end
			end
		end
	end
end)

ReplicatedStorage.BlueprintStructure.OnClientEvent:Connect(function(Structure)
	local Found = ReplicatedStorage.Structures:FindFirstChild(Structure)
	
	Model = Found:Clone()
	Model.Parent = workspace
	Placing = true
	
	for i,v in pairs(Model:GetDescendants()) do
		if v:IsA('BasePart') and v.Name ~= 'Center' then
			v.Transparency = 0.5
			v.BrickColor = BrickColor.new('Forest green')
			v.CanCollide = false
		end
	end
	
	Render = RunService.RenderStepped:Connect(function(Step)
		if UIS:IsKeyDown(Enum.KeyCode.R) then
			Rotation = Rotation + (Step * RotationIncrement)
		end
		
		local Pos = MouseHit(Model)
		
		if Pos == nil then
			Pos = Mouse.Hit.p
		end
		Model:SetPrimaryPartCFrame(CFrame.new(Pos) * CFrame.Angles(0,math.rad(Rotation),0))
		
		local TouchedConnections = {}
		local TouchingParts = {}
		
		for i,v in pairs(Model:GetDescendants()) do
			if v:IsA('BasePart') then
				table.insert(TouchedConnections,v.Touched)
				for i2,v2 in pairs(v:GetTouchingParts()) do
					table.insert(TouchingParts,v2)
				end
			end
		end
		
		for i,v in pairs(TouchingParts) do
			if v.Name == 'Range' then
				RangeHitBoxFound = true
				break
			end
		end
		
		for i,v in pairs(Model:GetDescendants()) do
			if v:IsA('BasePart') then
				v.BrickColor = RangeHitBoxFound and BrickColor.new('Really red') or BrickColor.new('Forest green')
			end
		end
	end)
end)

When placing is true and UIS detects a mouse click, it has a line for Render:Disconnect() but when I tested it myself the structure kept setting its position to my mouse position even after placing was set to false and Render:Disconnect() was called.