Hmm, i think vsync only works with exclusive fullscreen. But on the other hand, with Aero enabled, windows should force vsync in borderless fullscreen.
Can you try both fullscreen modes? Do you have Aero enabled? Did you try opengl and d3d? Oh, and only the vsync setting in Dolphin matters, the one in the gpu driver usually does not work from my experience, not even for opengl.
Can you try both fullscreen modes? Do you have Aero enabled? Did you try opengl and d3d? Oh, and only the vsync setting in Dolphin matters, the one in the gpu driver usually does not work from my experience, not even for opengl.