CFrame movement becomes very slow / laggy after a while, how do i fix this?

the CFrame movement of the attack becomes very slow overtime, any idea how to fix this and why this is happening?

local attack = script.Parent


while true do
    wait()
    if attack.Parent == workspace then

        repeat 

            attack.Position = Vector3.new(attack.Position.X - 1, attack.Position.Y, attack.Position.Z)
            wait(0.01)
        until attack.Position.X < 2625



        attack:Destroy()
        wait(.2)



    end


end

You're probably taking up too much memory by repeating when unnecessary to do so. Try this code and let me know if it works!

local attack = script.Parent


while true do

	if attack.Parent == workspace then

		if not (attack.Position.X < 2625) then
			
			repeat 

				attack.Position = Vector3.new(attack.Position.X - 1, attack.Position.Y, attack.Position.Z)
				wait()
				
			until attack.Position.X < 2625

			attack:Destroy()
			wait(0.2)
			
		end

	end

	wait()
	
end

This script isn't the problem (though it could trigger the problem). You have a bunch of while loops, but you don't use any events, nor do you create any threads/coroutines, so this script has no opportunity to have hundreds or thousands of threads. Since you're only executing one major command (and a few if statements) after each wait, there's no chance this is the true source of the lag.

However, since you're modifying the Position, I can imagine a few things that might trigger lag:

• This script is being cloned by other scripts
• Another script is doing something every time the position of Attack changes
• You have a very large number of parts all in the same area (lots of overlapping) (I doubt this is your problem)

To further diagnose the problem:

• Disable just this script. Does the problem still occur? If so, it has absolutely nothing to do with this script. If the problem isn't there, investigate the problems above.
• Look for other scripts that :Clone this script, toggle the Enabled property repeatedly (though I'm pretty sure that a script that's been Disabled has its coroutines stop resuming and so this shouldn't be an issue), or that listen to some sort of Changed event (in particular a :GetPropertyChangedSignal("Position") or "CFrame")
• Open up the Script Performance window, cause the lag to occur, and see if it reports any particular script as having really high activity.