Mouse.Target and Mouse.Target.Parent spamming?

So I am trying to make an efficient script to prevent 'lag', here it is:

local Last = nil

Mouse.Move:connect(function()
	if Mouse.Target ~= Last and Mouse.Target ~= nil then
		Last = Mouse.Target.Parent
		print(Last)
	end
end)

When I change 'Last = Mouse.Target' it doesn't spam the console but when I change it to '..Target.Parent' it spams the console with 'Workspace' not sure why as it is the same as 'Last' so it shouldn't..?

Let's run this through for you

• Last is nil
• You point at a Part.
• Part ~= nil, so it sets Last to Part.Parent which happens to be Workspace.
• You move your mouse a little, still pointing at Part
• Part ~= nil and Part ~= Workspace, so it sets Last to Part.Parent which happens to be Workspace.

I'm sure by this point you can see the issue. Make sure your conditions match up with your assignments.