Why the coin floats above the head?

I made a coin collecting system (there are coins around the map and the players pick them up to get cash). I've enabled Filtering so when some take the coin it will disappear only for him. To make it look a bit better I use a script that makes it float. My problem is when player 1 goes to a coin that is on player's 2 client the coin floats above player 1 head for player 2. I tried to disable the float script and it worked but I want to keep it.

Float script:

local num = script.Parent.num.Value
local coin = game.Workspace:WaitForChild("Coins"):WaitForChild("Coin"..num)

local coinPosition = coin.Position

while true do
	wait(0.1)
	for i = 1, 5 do
		wait(0.1)
		coin.Position = coin.Position + Vector3.new(0,i/40,0)
	end
	for i = 4, 1, -1 do
		wait(0.1)
		coin.Position = coin.Position + Vector3.new(0,i/40,0)
	end
	wait(0.1)
	for i = 1, 5 do
		wait(0.1)
		coin.Position = coin.Position + Vector3.new(0,-i/40,0)
	end
	for i = 4, 1, -1 do
		wait(0.1)
		coin.Position = coin.Position + Vector3.new(0,-i/40,0)
	end
	coin.Position = coinPosition
end

the script is not mine.