:MoveTo() failing to move NPC

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I’m working on some creatures for my game who just wonder around the map until they see a player using PathFindingService and :MoveTo()

Everything works fine, however after about a minute, :MoveTo() seems to stop working…

The mob walks from point to point smoothly then :MoveTo() begins failing and delaying at every point.

function AI.WalkToPoint(position)

	NPC.Humanoid:MoveTo(position)
	
	local doneWalking = false
	local walktoFinish = nil
	walktoFinish = NPC.Humanoid.MoveToFinished:Once(function() -- Fire when npc reaches finish
		doneWalking = true
	end)
	
	-- Wait 8 seconds or until npc reaches finish
	local startTick = tick()
	repeat
		task.wait()
	until doneWalking or tick()-startTick >= 8
	
	if (walktoFinish) then -- Clean up
		walktoFinish:Disconnect()
	end
	
	if (not doneWalking) then -- If not at finish, try again
		AI.WalkToPoint(position)
	end
	
	return true -- Return to walk to next point
end

I know :MoveTo() tries for 8 seconds then gives up, so my code allows for these 8 seconds, but waiting 8 seconds between each point isn’t exactly ideal.

I just don’t understand what is wrong, as I have tons of checks to makes sure the destination is always valid and it seems to work perfectly fine before randomly giving up.

Anyone experience this issue?