GPIO pins are very sensitive

[Benny7587]

Because of the very sensitive GPIO pin and the long cable (3 meters) to the push button (we only play one video) the video starts sometimes when lights are switched on or off. I tried to solve this with a pull up resistor and also a capacitor over the wire but cannot get it to work properly. I was thinking of a software solution in a way that the status of the gpio pin is checked multiple times with a short wait state (5x50msecs…) in between. Could this eliminate an induction pulse on the long cable. What is your opinion about this idea?