CLASSIC-Crashes When enabling VSync

Stopping discord and disabling overlay in ( literally) everything i could ( i dont use them anyways)

WoW Classic no longer gives that error when adjusting certain settings anymore. it also stopped a few of my other titles from jittering randomly while playing. so huge thanks for the suggestions for these!

Was getting this error while using precision x1 from evga and having the osd on screen.

Its worked great when I disabled both Precision X and Discord thanks.

I do not have any overlay, and discord isnt even running and i still cant enable vsync

I’ve been suffering from this issue for years on multiple machines and literally today I found the fix.

There was some NVIDIA bloatware my machines have (Geforce experience I believe) that have an overlay that will cause the issue EVEN IF THE OVERLAY IS COMPLETELY DISABLED IN SETTINGS. IF YOU “CLOSE” OR CLICK THE “X” ON THE PROGRAM, IT WILL LIKELY MINIMIZE TO THE TASKBAR AND WILL NOT ACTUALLY CLOSE WHICH IS WHY I NEVER CAUGHT THE PROBLEM, I THOUGHT THE OVERLAY PROGRAM WAS CLOSED AND DISABLED SO I ASSUMED IT WASN’T THE ISSUE.

When I killed the NVIDIA processes and actually closed that garbage (can also right click the green icon on the task bar and hit “Exit” or “Close” I think it magically started working.