Oh, it is absolutely worth it. It's a night and day difference. There's none of those things here. It seems you had bad monitors. I've heard of some monitors having these issues. You need to make sure you're getting a monitor that doesn't have such problems. No. By default, G-Sync is only active for exclusive fullscreen games. Not for the desktop. You need to explicitly enable it for windowed games. That is just you. Without G-Sync, there is tearing and stutter. With V-Sync there is stutter and input lag.