Turn Vsync on. Worked for my old graphics card.
Vsync doesn't decrease lag, it just makes your frames go at a steady rate of frames per second. Without vsync, your FPS can go into the thousands assuming you have a good enough computer, but if you quickly move the camera around you'll see lines across the screen, not lines like black and white or colorful lines, but lines formed by two frames being merged or something.
With vsync, your FPS is locked into a steady rate unless you actually start lagging (and you'll lag the same way like before) and you won't see those lines that appear when frames are being forgeted together.