I would avoid polling unless you really need to. The binding is designed to keep polling down, so if you have a lot of devices where you’ve configured polling, then it will only allow 2 polls into the queue at once. This is done to keep the binding responsive - otherwise, if you fill the queue up will polls, when you go to turn on the lights, you might have to wait.
What devices do you have? If they support associations, then use associations, and disable polling.