Well, if you're using your laptop's built-in LCD screen, then there's nothing to worry about at all. The only thing you would lose is the max FPS in games with VSync ENABLED would be lower (i.e. if your refresh rate is at 60Hz, the max FPS you can get with VSync Enabled is 60FPS, and if your refresh rate is at 120Hz, the max FPS you can get is 120FPS with VSync Enabled). With VSync disabled, there will be ZERO effect at all.
If you're referring to an external CRT monitor, then there's more to it. Unfortunately, without knowing more, like what driver version you were using before upgrading to 169.04, whether or not you did a clean install with Driver Cleaner and CCleaner, and if you do indeed have an external CRT monitor, I can't accurately diagnose your problem.