Emulator

Sorry, forgot some information here--Operating system is Windows 7 Home Premium SP1 x64, CPU is i7-4700MQ (IIRC), and GPU is Nvidia GeForce GT 750M.

I'm unable to reproduce. Have you tried checking "Render Window on Top" and making sure Render to Main Window is unchecked?

It tears even when Render to Main Window is unchecked, but even so, I get tons more framerate stutters when I don't render to the main window. I'm looking for a fix, not a workaround. Also, Render Window on Top does nothing.

I have a NVIDIA card, and I'm not having the issue on a dual monitor setup where exclusive fullscreen may have problems. We need to figure out what's wrong before we can find a fix, and these "suggestions" were to try and figure out what could be causing it.

I don't know what problems a dual monitor setup would introduce/fix. I'm on a laptop. Are there any other relevant settings?

Can you try turning off Windows Aero (select a basic profile?) and then using vsync in full screen.

Tried enabling a basic theme (no Aero), tearing still happened. And for some reason I started dropping frames like crazy even though performance was at 100%, but that's probably unrelated.

I think his deduction about this issue being uncovered by the exclusive fullscreen support is correct. It grants OpenGL full control over the screen, therefore V-Sync is the responsibility of OpenGL. (So make absolutely sure V-Sync is enabled)

When you're not in exclusive fullscreen Aero will handle V-Sync. If you disable Aero you should notice tearing both in fullscreen and windowed mode. Could you confirm that?

If that is the case it means OpenGL is not handling V-Sync correctly, either something on your PC is overriding V-Sync or it is inherently broken in the OpenGL backend. I'll try to reproduce it when I have time.

Just a thought: Its possible the NVIDIA driver could be overriding Dolphin setting. Check the NVIDIA Control Panel and make sure the Vsync setting is set to either "On" or "Application Controlled".

Also, I remember there's an issue with Windows Vista and later where Vsync doesn't quite work right depending on your desktop environment if not in exclusive fullscreen mode. I think this occurs if you don't have an aero theme. But that's another test you could try, forcing Dolphin to go into fullscreen (Not Maximized; it must be fullscreen).

Hope these ideas help.

I did some testing last night and today with my GTX 770M and HD 4600. The 770M does have screen tearing, disabling Aero doesn't help, and neither does changing the Vsync option in the Nvidia control panel. I tried fully uninstalling my drivers, downgrading to old drivers (332.21 and everything in-between), but nothing works.

However, using the Intel HD 4600, there is no issue with screen tearing under OpenGL. At all.

-KHg8m3r (I really need to change my email header to show that)

Turning off Aero shouldn't help, instead it should show tearing even in Windowed mode which would prove that issue isn't just limited to fullscreen.