How can I fix lag when people first join my game?

Whenever people join my game, it lags like crazy. The chat is broken, and people walk in place. From my research, it appears to be coming from a points saver script. However, this script is critical. and I need it. The model is a data saver. The other suspect is a leaderboard creator. At some point when there is a PlayerAdded function, it messes the whole server up. Please help!

local datastore = game:GetService("DataStoreService")
local ds1 = datastore:GetDataStore("GemSaveSystem")

game.Players.PlayerAdded:connect(function(plr)
	local folder = Instance.new("Folder", plr)
	folder.Name = "leaderstats"
	local gems = Instance.new("IntValue", folder)
	gems.Name = "Obby Wins"
	
	
	gems.Value = ds1:GetAsync(plr.UserId) or 0
	ds1:SetAsync(plr.UserId, gems.Value)
	
	
	gems.Changed:connect(function()
		ds1:SetAsync(plr.UserId, gems.Value)
	end)
	

	end)

Another suspect:

game.Players.PlayerAdded:connect(function(p)
	local stats = Instance.new("IntValue")
	stats.Name = "leaderstats"
	stats.Parent = p
	
	local money = Instance.new("IntValue")
	money.Name = "Obby Wins" -- Change "Money" to anything you want to name it like "Cash"
	money.Parent = stats
end)