I don't know exactly because I use OpenGL, but what if you downgrade your nVidia drivers to 332.21 and try it with OpenGL?
Also, try setting the AF in your nvidia control center to Application Controled and Maximum Pre Rendered frames to the default (3) and Vertical Sync to off and enable it via Dolphin if needed.
Also, do you need the EFB? I remember that it works fine with it being disabled.
Try that if something fixes your problems.
Also, try setting the AF in your nvidia control center to Application Controled and Maximum Pre Rendered frames to the default (3) and Vertical Sync to off and enable it via Dolphin if needed.
Also, do you need the EFB? I remember that it works fine with it being disabled.
Try that if something fixes your problems.