I disabled sticky and filter keys, as well as made sure that the keyboard's drivers were up to date, and that the device wouldn't be in power saving mode (anyways, I always game with my charger plugged in). I would have to press the key, regardless of the amount of pressure, to stop the 'key spam'.
From time to time (about every 15 minutes), my WASD keys would get stuck and repeat themselves in games (my character would keep walking). The day after I bought it, I started playing games. I bought the HP Omen laptop about four days ago.