I have RPI's GPIO connected to a relay board, everything works fine, and relays are nicely controlled, but there is one problem: when the RPI restarts, the GPIO pins have unstable state and keeps changing very quickly, which in turns causes the relays connected to them to flicker very quickly, which can destroy the devices connected to them.
P.S. I'm talking about GPIO 14
What is going on here, and how to stop that?