What Is V-Sync and When to Turn It On on Windows
The simple rule based on the type of game, and why turning it on introduces a small delay.
Almost every game has an option called "V-Sync" or "Vertical Sync" in its graphics settings, almost always with no explanation of what it does. Here's what it actually is, and a simple rule for knowing when to turn it on.
Simple explanation
Your graphics card generates images (frames) as fast as it can, but your monitor can only show a limited number per second (60, for example). When the graphics card goes faster than the monitor can display, you sometimes see two different frames at once, split by a horizontal line — this is called screen tearing. V-Sync forces the graphics card to wait for the monitor before sending the next frame, eliminating that tear.
The simple rule
| Type of game | Recommendation |
|---|---|
| Single-player, relaxed pace (RPG, adventure) | Turn it on if you see screen tearing |
| Competitive, shooters, fast-paced | Turn it off — prioritise immediate response |
| Old games with very high FPS | Turn it on — avoids unnecessarily overheating the graphics card |
The reason for the rule: turning on V-Sync introduces a small delay (input lag) between moving your mouse and seeing the result on screen. In a relaxed game you won't notice it. In a competitive shooter, that fraction of a second can be the difference between hitting a shot or not.
How to turn it on
Most games include it directly in their graphics options — look for "V-Sync" or "Vertical Sync". If your game doesn't offer it, you can force it from your graphics card's control panel (NVIDIA or AMD), though it will affect every game, not just one.
The modern alternatives: G-Sync and FreeSync
If your monitor and graphics card are compatible (G-Sync for NVIDIA, FreeSync for AMD), these technologies do a similar job to V-Sync but more intelligently — they adjust the monitor's refresh rate in real time, instead of forcing fixed limits, with much less delay. If you have this option available and compatible with your setup, it's usually preferable to classic V-Sync.
If, besides tearing, you also notice stuttering or freezing (different from tearing), our guide on games stuttering on Windows covers that specific problem.
Frequently asked questions
Does V-Sync improve the game's graphics?
No, it doesn't improve colours, textures or resolution — it only syncs the speed at which frames are displayed to avoid the visual tear known as screen tearing.
Why is it recommended to turn it off in competitive games?
Because it introduces a small delay between your action (moving the mouse, shooting) and what you see on screen. In games where reaction speed matters, that delay can hurt your performance.
Do I need a special monitor to use V-Sync?
No, V-Sync works on any monitor. G-Sync and FreeSync do require a monitor specifically compatible with those technologies, plus a graphics card from the corresponding manufacturer.