Why is my gun fire slower than what I put at the wait value?

I am trying to make an automatic ak-47, but I am having trouble with the automatic part of the code. I want to know how to make a smooth fire rate and not one that is unpredictable like the one I have. I want to say the culprit is the repeat until loop. I think maybe the function call FireServer() is way to slow and is causing problems with my gun.

Local script

local player = game:GetService("Players").LocalPlayer
local tool = script.Parent
local event = tool:WaitForChild("RemoteEvent")
local stopped = true

tool.Equipped:Connect(function(mouse)
	mouse.Button1Down:Connect(function()
		stopped = false
		repeat
			event:FireServer(mouse)
			wait(1)
		until stopped
	end)
	
	mouse.Button1Up:Connect(function()
		stopped = true
	end)
end)

Server Script

local tool = script.Parent
local event = tool:WaitForChild("RemoteEvent")
local main = tool:WaitForChild("Main")
local fireSound = script.Parent.Handle.FireSound

local function CreateRay(player, mouse)
	local ray = Ray.new(main.Position, (mouse.Hit.p - main.Position).unit * 300)
	local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)
	return part, position
end

local function PlayEffects()
	fireSound:Play()
	main["1FlashFX[Smoke]"].Enabled = true
	main["FlashFX[Flash]"].Enabled = true
	main["FlashFX[Light]"].Enabled = true
	wait(0.1)
	main["1FlashFX[Smoke]"].Enabled = false
	main["FlashFX[Flash]"].Enabled = false
	main["FlashFX[Light]"].Enabled = false
end

local function CreateBeam(position)
	local beam = Instance.new("Part", workspace)
	beam.FormFactor = Enum.FormFactor.Custom
	beam.Material = Enum.Material.Neon
	beam.BrickColor = BrickColor.new("New Yeller")
	beam.Transparency = 0.5
	beam.Anchored = true
	beam.Locked = true
	beam.CanCollide = false
	
	local direction = (main.Position - position).magnitude
	beam.Size = Vector3.new(0.3, 0.3, direction)
	beam.CFrame = CFrame.new(main.Position, position) * CFrame.new(0, 0, -direction / 2)
	
	return beam
end

local function CalculateDamage(part)
	if part and part.Parent then
		local humanoid = part.Parent:FindFirstChild("Humanoid")
		
		if not humanoid then
			humanoid = part.Parent.Parent:FindFirstChild("Humanoid")
		end
		
		if humanoid then
			humanoid:TakeDamage(10)
		end
	end
end

event.OnServerEvent:Connect(function(player, mouse)
	local part, position = CreateRay(player, mouse)
	local beam = CreateBeam(position)
	game:GetService("Debris"):AddItem(beam, 0.1)
	CalculateDamage(part)
end)