I was looking for a command to stop the Achivement Panel to auto open everytime i get an Achivement… when levelling alts it is really annoying for how often it opens… something like: (do not use this, its just a draft following logic of other commands i used in the past) /console AutoOpenAchievementFrame 0 /console AutoLoadAchievementFrame 0
I mean the banner that pops up in the top middle of your screen when you get an achievement. Rather than the Achievement Panel, which is what appears when you press Y (by default) or click on the achievement banner that popped up.
Like I said, grab AIO and see if there’s a CVar responsible for the behavior you’re seeing.