The answer to 'dimmer switch flickering lights' is that a flickering dimmer switch is usually caused by a compatibility issue between the switch and the light bulbs. Dimmer switches work by reducing the power to the bulbs, but if the bulbs are not compatible, this can cause them to flicker or blink.
Some common causes of dimmer switch flickering include using the wrong type of light bulb, a loose or faulty connection in the switch, or an overloaded circuit. To fix the issue, you may need to replace the dimmer switch, use compatible LED or halogen bulbs, or have an electrician check the wiring in your home.