Gun beam lagging behind, how can I fix this?

Evening.

I have scripted a few guns in the past and they've all had this problem, and I'm thinking it's about time I ask for some help with it.

The gun is set up as one local script and two server scripts. The local script is firing a remoteEvent every time the gun is meant to fire (when the player clicks or every .5 seconds when the player is holding button1 down), with the mouse.hit of the player's mouse. One server scripts is for the beam, and the other is for damage. I will only include the local script and the beam server script here.

I have copied some of the code from developer.roblox.com, as I am too lazy to script it myself and I wouldn't have come up with anything different.

The beam server script creates a ray that extends for 300 studs when the server is fired. It then finds a part on this ray via workspace:FindPartOnRay() and takes the part and the position of the part as variables (part, position). It then creates a beam in the middle of the ray and sizes it to fit the ray's size (0.3, 0.3, distance/2). This beam, however, is lagging behind, which is incredibly frustrating.

The problem is not that the beam is spawning in the right place and the player is moving past it. The problem is that the beam is spawning behind where it should be, or where it would have been had the player fired a bit earlier. AKA the beam is lagging.

The local script:

--VARIABLES
local t = script.Parent.Parent
local ANIMS = t.ANIMS
local p = game.Players.LocalPlayer
local event = t:WaitForChild("Event")
local mouse = p:GetMouse()
local uis = game:GetService("UserInputService")

repeat wait() until p.Character
repeat wait() until p.Character.Humanoid

local c = p.Character
local h = c.Humanoid

local e = false
local patroltoggle = false
local debounce = false
local w = h.WalkSpeed

--ANIMATIONS
local idle = ANIMS.IDLE
idle = h:LoadAnimation(idle)
local patrol = ANIMS.PATROL
patrol = h:LoadAnimation(patrol)
local firing = ANIMS.FIRING
firing = h:LoadAnimation(firing)

local animations = {idle, patrol, firing}

--FUNCTIONS
local function stopAllAnims()
    for _, anim in pairs(animations) do
        anim:Stop()
    end
end

t.Equipped:Connect(function()
    e = true
    w = h.WalkSpeed
    idle:Play()
end)

t.Unequipped:Connect(function()
    e = false
    stopAllAnims()
end)

--MAIN FUNCTION
uis.InputBegan:Connect(function(input)
    if e == false then return end
    if debounce then return end

    --Firing
    if uis:IsMouseButtonPressed(Enum.UserInputType.MouseButton1) then
        patroltoggle = false
        patrol:Stop()
        h.WalkSpeed = w
        firing:Play()
        debounce = true
        wait(0.1)
        while uis:IsMouseButtonPressed(Enum.UserInputType.MouseButton1) do
            event:FireServer(mouse.hit)
            wait(0.5)
        end
        firing:Stop()
        debounce = false
    end

    --Running
    if input.KeyCode == Enum.KeyCode.F then
        if patroltoggle == false then
            patrol:Play()
            idle:Stop()
            h.WalkSpeed = w*2
            patroltoggle = true
        else
            patrol:Stop()
            idle:Play()
            h.WalkSpeed = w
            patroltoggle = false
        end
    end
end)

The beam server script:

--VARIABLES
local t = script.Parent.Parent
local event = t:WaitForChild("Event")

--MAIN FUNCTION
event.OnServerEvent:Connect(function(p, ...)
    local tuple = {...}

    --Creating ray
    local ray = Ray.new(t.Nozzle.Position, (tuple[1].p - t.Nozzle.Position).unit * 300)
    local part, position = workspace:FindPartOnRay(ray, p.Character, false, true)

    --Creating beam
    local beam = Instance.new("Part", workspace)

    beam.BrickColor = BrickColor.new("Toothpaste")
    beam.FormFactor = "Custom"
    beam.Material = "Neon"
    beam.Transparency = 0.25
    beam.Anchored = true
    beam.Locked = true
    beam.CanCollide = false

    --Positioning and sizing beam
    local distance = (t.Nozzle.CFrame.p - position).magnitude
    beam.Size = Vector3.new(0.3, 0.3, distance)
    beam.CFrame = CFrame.new(t.Nozzle.CFrame.p, position) * CFrame.new(0, 0, -distance / 2)

    --Deleting the beam
    game:GetService("Debris"):AddItem(beam, 0.1)
end)

If any more information is needed, this article should suffice, however feel free to comment with your questions.

ROBLOX Developer Website, Making a Laser Gun: https://developer.roblox.com/en-us/articles/Making-a-ray-casting-laser-gun-in-Roblox