For sometime, TDR is happening to my laptop, and my secondary monitor, only when playing WoW. I tried everything, the tech support recommended me, but nothing helped. I disabled every overlay (nvidia, discord, etc). I have really no idea what else could have it been. It does not happen when I use only my main, laptop monitor. Did anyone else experience it? It started after a windows update, and 9.0.5.
This just means that either your GPU or your graphics drivers stopped working and had to be restarted. You can find more information on this here.