Can you try to disable any overlays you have running such as GeForce Experience or Discord? We are aware of some issues that are being caused by overlays and disabling them may allow you to work around this.
Closing all apps that overlay works, I had discord and geforce exp running. F.Y.I, even if you close discord for geforce they will have background process still running. CTRL+ALT+DEL open task manager, sort in ABC order close all discord sessions open, scroll down to nvidia Shadow Play, and close that one as well. Open WoW Classic and turn Vsyn on, boom this time no crash.
While testing this, I tried just closing out geforce and discord by normal methods and still had issues, than I task manager and closed discord still had issues, so I starting going thru nividia ones and I know shadow play uses overlay and saw that process was still running in background, so I closed that one retried vsync again and this time works.
I’m also having this issue with Classic, but not BFA. I’m told hardware settings were changed and if I would like to restore to defaults. If I select yes on BFA I can load up just fine but not in Classic. Not sure what’s changed but its nothing I’ve done. This is all happening after my laptop shut down the other day because I didn’t realize it wasn’t plugged in and battery died.
Tried every solution I’ve found online so far, Classic continues to give me 3D error yet no problems at all with BFA unless I select “No” when asking to restore to default Hardware Settings
Special thanks to Liziveta on the forums here, but if you turn on Windows 7 compatibility mode on the WoWClassic.exe, you can change any settings without crashing! I also am a user of Discord and I have not had to close the program to make the change after applying this fix.
4 months later still crashing, multiple tickets opened. Nothing. This threads advice is NOT a solution for everyone. Disappointed I can freely do anything on any other version of wow, but crashing on a 15 year old client lol… really wish I could fix this, I’ve tried my utmost best legit, I give up on this I have accepted this bug to be a permanent thing & that’s actually just sad givin the fact this game is literally 15 bucks a month to play and nobody can fix this solution for me.