Why is my npc stuttering while using pathfinding?

I really don't know why its stuttering and have no clue the only thing I noticed is that it stops for like half a second after it reaches its waypoint which I confirmed by adding an instance for the position of the waypoint, does anyone know how to fix this? The code below is used as lets say a zombie to go and smartly find a character, I have all the character finding and all that stuff down its just the patfinding acting up.

local PathfindingService = game:GetService("PathfindingService")
local NPCCharacter = script.Parent
local NPCRootPart = NPCCharacter:FindFirstChild("HumanoidRootPart)

local function Createpath(Target)
    local path = PathfindingService:CreatePath()
    path:ComputeAsync(NPCRootPart.Position, Target)

    return path
end

local function WalkPath(Target)
    local path = Createpath(Target)
    print("Walking to path!")
    local WayPoints = path:GetWaypoints()

    for WaypointIndex, waypoint in pairs(WayPoints) do
        if waypoint.Action == Enum.PathWaypointAction.Jump then
            NPCHumanoid.Jump = true
        end
        NPCHumanoid:MoveTo(waypoint.Position)
        NPCHumanoid.MoveToFinished:Wait()
    end
end

while true do
    WalkPath(game.Workspace.EndPoint.Position)
end