Problem with npc movement

Help and Feedback Scripting Support
#1

The zombie pause to move when the animation’s play, how to make the zombie keep moving when the animation play? and is there any way to make the loop a little bit lighter, because im using while loop for server side

local PathfindingService = game:GetService("PathfindingService")
local zombie = workspace:WaitForChild("Dummy")
local humanoid = zombie:WaitForChild("Humanoid")
local nearest
local path = PathfindingService:CreatePath()
local d = false
local het = false
local pley = humanoid:LoadAnimation(script.Attack)
local function hitting(hit)
	if hit.Parent.Name ~= zombie.Name and hit.Parent:FindFirstChild("Humanoid") and het == false then
		het = true
		hit.Parent.Humanoid:TakeDamage(10)
	end
end
while wait() do
	local player = game.Players:GetPlayers()
	for i,v in pairs(player) do
		local chars = v.Character or v.CharacterAdded:Wait()
		if (chars.HumanoidRootPart.Position - zombie.HumanoidRootPart.Position).Magnitude <= 100 then
			nearest = chars.HumanoidRootPart
		end
	end
	path:ComputeAsync(zombie.HumanoidRootPart.Position,nearest.Position)
	local waysPoint = path:GetWaypoints()
	if #waysPoint >= 2 then
		for i,v in pairs(waysPoint) do
			humanoid:MoveTo(v.Position)
		end
	end
	if (nearest.Position - zombie.HumanoidRootPart.Position).Magnitude <= 5 and d == false then
		d = true
		pley:Play()
		if pley.IsPlaying then
			if (nearest.Position - zombie.HumanoidRootPart.Position).Magnitude > 5 then
				pley:Stop()
			else
				zombie.RightHand.Touched:Connect(hitting)
				zombie.LeftHand.Touched:Connect(hitting)
			end
		end
		pley.Stopped:Wait()
		d = false
		het = false
	end
end
#2

The reason why your NPC stops running when it’s doing its attack animation is because you have pley.Stopped:Wait() which yields your script because it waits for your pley animation to stop playing in order to resume the script.