RenderStepped (setting part's CFrame) causes very high lag

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#21

Still not solved. Anyone got any possible solutions?

#22

What kind of method does the flashlight use for its light?

#23 
local info = TweenInfo.new(FlashlightModule.TweenSpeed, Enum.EasingStyle.Quad, Enum.EasingDirection.Out, 0, false)
	
	local LightPart = nil
	local OnSound = nil
	
	if UV then
		LightPart = script:WaitForChild("UVPart"):Clone()
		
		OnSound = workspace:FindFirstChild("SFX"):FindFirstChild("IdleSoundUV"):Clone()
		OnSound.Parent = obj
		OnSound:Play()
	else
		LightPart = script:WaitForChild("LightPart"):Clone()
		
		OnSound = Instance.new("Sound")
		OnSound.Parent = obj
		OnSound.Name = "OnSound"
		OnSound.SoundId = "rbxassetid://198914875"
		OnSound:Play()
	end
	
	local Ring = LightPart:WaitForChild("Ring")
	local Light = LightPart:WaitForChild("Light")
	
	workspace.CurrentCamera:GetPropertyChangedSignal("CameraType"):Connect(function()
		if workspace.CurrentCamera.CameraType == Enum.CameraType.Custom then
			Light.Enabled = true
		else
			Light.Enabled = false
		end
	end)
	
	--LightPart.Anchored = true
	LightPart.Parent = workspace.CurrentCamera
	LightPart.CFrame = Camera.CFrame - obj.CFrame.LookVector -- Vector3.new(0,50,0)
	
	Light.Enabled = true
	Ring.Transparency = 0.747
	
	if mobile then
		Light.Brightness *= 2
	end
	
	if workspace.CurrentCamera.CameraType == Enum.CameraType.Custom then
		Light.Enabled = true
	else
		Light.Enabled = false
	end
	
	delay(1, function()
		OnSound:Destroy()
	end)
	
	
	connect = game["Run Service"].Heartbeat:Connect(function(DT)
		if LightPart then
			if not FlashlightModule.Lerp then
				game:GetService("TweenService"):Create(LightPart, info, {CFrame = Camera.CFrame - obj.CFrame.LookVector}):Play()
			else
				--LightPart.CFrame = LightPart.CFrame:Lerp(Camera.CFrame - obj.CFrame.LookVector, FlashlightModule.LerpSpeed)
			end
		end
	end)
#24

You could try running the :Heartbeat() (which is now replaced by :PostSimulation()) code whenever the camera CFrame changes:

workspace.CurrentCamera:GetPropertyChangedSignal("CFrame"):Connect(function()
	if LightPart then
		if not FlashlightModule.Lerp then
			game:GetService("TweenService"):Create(LightPart, info, {CFrame = Camera.CFrame - obj.CFrame.LookVector}):Play()
		else
			--LightPart.CFrame = LightPart.CFrame:Lerp(Camera.CFrame - obj.CFrame.LookVector, FlashlightModule.LerpSpeed)
		end
	end
end)
#25

Tried .Stepped, .RenderStepped, .Heartbeat and eve GetPropertyChangedSignal. Hasn’t fixed.

#26

could it be the FlashlightModule then?

#27

It’s not only the flashlight. There’s a trap tool that when equipped, sets a placeholder trap infront. Which also decreases FPS greatly. Anything that sets CFrame at a high speed just drops the FPS somehow. Haven never encountered this issue except now.

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#28

have you used RayCast before using it for your flashlight and trap?

#29

Is this being run every time the flashlight is activated? If so, it could be that you aren’t disconnecting the RunService connections before setting a new one.

For example, the following does not disconnect the first Heartbeat connection.

connection = RunService.Heartbeat:Connect(function() end)
connection = RunService.RenderStepped:Connect(function() end)

You have to disconnect before connecting another function.

connection = RunService.Heartbeat:Connect(function() end)
connection:Disconnect()
connection = RunService.RenderStepped:Connect(function() end)
#30

Yes I have, I know how it works.

#31

Yes once it’s deactivated it gets :Disconnect(), this isn’t the issue even. The issue occurs meanwhile the loop, not after it.

#32

If your using scripts with runcontext set to client it may be the issue.

I had a very simple tweening script that for some reason had more resource consumption than the other scripts (including one that set the cframe for a model every frame)

#33

Soo how would I fix that exactly?
Edit: Ohhh nvm you were talking about the script’s property. But my scripts are LocalScripts, which don’t have RunContext as a property. So how would I go about fixing that?

#34

are you sure this happens also in the normal roblox client? i have experienced a lot of weird fps drop from time to time, like when i equip tools in microsoft store roblox my fps just drops to 5~.

then maybe try this in an empty place it would help to know if its an hardware issue or not.

#35

It’s happening on PC for everyone, haven’t tried Microsoft Roblox nor other devices yet.