So 1/2 Vsync is the best solution for 60Hz. Unless it doesn't accept exclusive mode (I'm checking on that,) otherwise use 30FPS with Gsync. If using Gsync for this OpenGL app, which should be used; Limiter v1 or v2? What would be the best option for other frequencies? Again, solid framerate with as little tax to the CPU as possible. I appreciate the speedy response though.