How can I get an NPC to actively smoothly follow a player (with PathFinding)?

So I have gotten all the pathfinding to work properly, my problem is having the NPC actively follow the player. What I think is happening is when I update the path the NPC wants to go to the first waypoint however sometimes that waypoint is behind them which causes them to turn around for a second.

So my question is ... can someone help me find a way to have the NPC's pathfinding update constantly to be able to smoothly follow a moving player?

Whats happening: https://gyazo.com/6b9bdb221942eb9baa2a7d9ed19b8cd7

Full script

local pathFinding = game:GetService("PathfindingService")
local npc = script.Parent
local humanoid = npc.Humanoid
local maxDistance = 50
local target
local wayPoints = {}
local path
local currentWaypoint

function findTarget()
	local newDistance
	local closestdistance
	local closestPlayer
	for i,v in pairs(game.Players:GetPlayers())do
		if v.Character then
			newDistance = (v.Character.HumanoidRootPart.Position-npc.Torso.Position).Magnitude
			if newDistance <= maxDistance then
				if closestdistance then
					if newDistance < closestdistance then
						closestdistance = newDistance
						closestPlayer = v.Character.HumanoidRootPart
					end
				else
					closestdistance = newDistance
					closestPlayer = v.Character.HumanoidRootPart
				end
			end
		end
	end
	return closestPlayer
end

function createPath()
	target = findTarget()
	if target then
		path = pathFinding:CreatePath()
		path:ComputeAsync(npc.Torso.Position,target.Position)
		if path.Status == Enum.PathStatus.Success then
			wayPoints = {}
			wayPoints = path:GetWaypoints()
			currentWaypoint = 1--setting this to 1 is what I think causes a problem
			for i,v in pairs(workspace.Paths:GetChildren())do
				v:Destroy()
			end
			for i,v in pairs(wayPoints)do
				local part = Instance.new("Part")
				part.Size = Vector3.new(.5,.5,.5)
				part.Position = v.Position
				part.BrickColor = BrickColor.new("Institutional white")
				part.Anchored = true
				part.Parent = workspace.Paths
			end
			moveTo()
		else
			print('path failed')
		end
	else 
		print('no player found')
	end
end

function moveTo()	
	if wayPoints[currentWaypoint].Action == Enum.PathWaypointAction.Jump then
		humanoid.Jump = true
	end
	humanoid:MoveTo(wayPoints[currentWaypoint].Position)
end

function onWaypointReached(reached)
	if reached and currentWaypoint < #wayPoints then
		currentWaypoint = currentWaypoint + 1
		humanoid:MoveTo(wayPoints[currentWaypoint].Position)
	end
end

createPath()
humanoid.MoveToFinished:Connect(onWaypointReached)
while true do--I am assuming there is a better way of doing this
	createPath()
	wait()
end

P.S .. sorry if this is a bad explanation :/