Fix extremely laggy tool that also bends gravity?

Hi i am making a video calling system. So lets just get straight to the point

I took a free model phone system, and used viewport frames and boatbomber's Viewport frame handler and then put it to the test.

So i equipped it, and instantly a ton of lag. (i was at like 7 fps) And also i noticed that i have a unanchored radio (its welded) and then that started flying and stuff then i unequipped it, and everything was super laggy but no gravity bending.

Let me specify hierarchy stuff

script.Parent is the viewport frame script.Parent.Parent is the gui Tool object value is the caller's or calling tool

Anyways, let me show you the script

local module = require(game.ReplicatedStorage:WaitForChild("ViewportHandler"))
local VF_HANDLER = module.new(script.Parent)
local tool = script.Parent.Parent:WaitForChild("Tool").Value
local camera = Instance.new("Camera")
script.Parent.CurrentCamera = camera
camera.Parent = script.Parent
local connection1 = game["Run Service"].RenderStepped:Connect(function()
	if tool then
		if tool.Calling.Value then
			local player = game.Player:GetPlayerFromCharacter(tool.Calling.Value.Parent)
			camera.CFrame = player.Character.Head.CFrame * CFrame.new(0,0,-5) * CFrame.new(player.Character.Head.CFrame * CFrame.new(0,0,-5),player.Character.Head.CFrame)
		end
	end
end)

for i,v in pairs(game.Workspace:GetDescendants()) do
	if v:IsA("BasePart") and not v:IsA("Terrain") and not game.Players:GetPlayerFromCharacter(v.Parent) then
		wait() --added a wait in both for i,v in pairs cause it literally crashed my roblox client without it
		VF_HANDLER:RenderObject(v,60)
	end
end

game.Players.PlayerAdded:Connect(function(player)
	VF_HANDLER:RenderHumanoid(player.Character or player.CharacterAdded:Wait())
end)
for i,v in pairs(game.Players:GetPlayers()) do
	wait()
	VF_HANDLER:RenderHumanoid(v.Character or v.CharacterAdded:Wait())
end

Really hope that i can find a fix! And as always, Thanks!