We’ll be using this forum thread to track known technical support issues, like conflicts which cause performance errors, crashes, and connection problems in WoW Classic. Check out the list below, and give these steps a try before creating a new topic! Additionally, more bug-related issues can be found in the Classic Bug Report Forum’s most recent Known Issues thread..
“Unable to Start up 3D Acceleration” with third party overlays running
Some players are experiencing crashes while changing graphics settings in game. Based on our investigations, these appear to be caused by background programs with overlays. Please try disabling any background applications if you are having this issue, especially any which draw an overlay on top of the game client.
We are currently investigating distorted sounds from Death Knight characters which may cause audio crackling in WoW Classic. This includes when playing the class or simply being around a Death Knight. A possible workaround until this issue can be resolved is disabling the DSP Effects. When in-game, please type the following command in chat: