Display & latency
VSync on or off? An honest guide
Reviewed July 2026
“Turn VSync on” and “turn VSync off” are the two most repeated tips — and both can be right or wrong depending on your setup. Here's what tearing is, what VSync really does, the real cost (input lag and FPS drops), why G-SYNC/FreeSync is the modern best answer, and how to decide for your case — with no invented numbers.
When should you turn VSync on or off?
01 What screen tearing actually is
Your monitor refreshes a fixed number of times per second (its refresh rate: 60 Hz, 144 Hz, 240 Hz, etc.). Your graphics card, meanwhile, delivers frames at its own pace, which almost never lines up. When the GPU hands over a new frame right as the monitor is mid-draw, you see the top half of one frame and the bottom half of another at the same time: that's tearing — a horizontal line where the image “splits” and goes out of alignment. It's most visible when you pan the camera sideways.
02 What VSync actually does
VSync (vertical sync) tells the GPU to wait and deliver each frame aligned with the monitor's refresh, instead of whenever it's ready. That way the monitor always shows one complete frame and tearing disappears. It's the oldest, most universal fix: it works on any monitor with no special hardware. The catch is HOW it achieves that sync — and that's where the costs in the next steps come from.
03 Cost 1: VSync adds input lag
To sync up, VSync holds finished frames back until the monitor is ready to show them. That waiting frame is extra time between moving your mouse and seeing the result on screen — input lag. Exactly how much depends on the game, the FPS, and how many frames it keeps queued, so we won't quote a made-up number. The honest, important point: VSync always adds some latency compared with leaving it off. In relaxed games you barely feel it; in competitive shooters, you do.
04 Cost 2: it can halve your FPS
Classic (double-buffered) VSync can only display frames at exact refresh moments. If your monitor is 60 Hz and the GPU can't reach 60 FPS, VSync won't give you, say, 50 — it falls to the next synced divisor, 30. You jump from 59 straight to 30, a huge and very noticeable drop. So without modern tech, VSync only feels good when you can HOLD your FPS at or above the refresh rate. If you can't sustain it, the cure can feel worse than the tearing.
05 The modern best answer: VRR (G-SYNC / FreeSync)
Variable refresh rate (VRR) — G-SYNC on NVIDIA, FreeSync on AMD, and generic “Adaptive-Sync” — flips the problem: instead of forcing the GPU to wait for the monitor, it makes the MONITOR wait for the GPU and refresh exactly when a frame is ready. The result is no tearing and no FPS-halving, with far less latency than VSync. It needs a compatible monitor (the vast majority of today's gaming displays are) and you have to enable it. If your monitor has VRR, this is almost always the best option.
06 How to combine VRR + VSync correctly
VRR has a range (for example ~48 to 144 Hz). Inside that range it removes tearing on its own; above the top end, tearing can return. The vendor-tested recipe: turn on G-SYNC/FreeSync, also turn VSync on but only as a backstop for when you exceed the range, and cap your FPS a few frames below the refresh rate (for example 141 on a 144 Hz panel) so you stay ALWAYS inside the VRR range. Add your GPU's low-latency mode (NVIDIA Low Latency / AMD Anti-Lag). That gives you zero tearing with almost no input lag.
07 Competitive: why many play with VSync off
In high-level shooters, the lowest possible latency beats a perfect image. That's why many esports players turn VSync fully off and accept some tearing in exchange for the most immediate response. It's a valid, honest choice — not a myth. On a high-refresh monitor (144 Hz+), tearing bothers you far less because each frame lives on screen for so little time. If you play competitively and don't have VRR, VSync off plus a sensible FPS cap is usually best.
08 How to decide for your setup (the simple rule)
Decide with three questions. 1) Does your monitor have G-SYNC/FreeSync? If yes: enable it, VSync as a backstop, and cap FPS a few frames below the refresh — set for almost everything. 2) No VRR, but you HOLD an FPS at or above your refresh rate? Then VSync on gives you a clean image at little cost. 3) No VRR and you CAN'T reach the refresh, or you play competitively? Try VSync off (with an FPS cap to reduce both tearing and lag). There's no single right answer: it depends on your monitor, your FPS, and your game.
09 Where Neon helps (honestly)
You set VSync, VRR, and the FPS cap yourself in the game, the NVIDIA Control Panel, or AMD's software — and every one of those steps works without Neon. Neon doesn't “improve” VSync or invent latency figures: what it does is measure real numbers from your system (FPS, monitor refresh rate, GPU usage) and explain them in plain language, so you know whether you're holding your refresh and which of these options fits you. The wins it automates are Windows-side, safe and reversible, and every change is logged so you can undo it. It never touches your BIOS or forces your hardware.
What to choose, at a glance
| Your scenario | Recommended |
|---|---|
| Monitor with G-SYNC/FreeSync | VRR on, VSync as backstop, cap a few FPS below refresh |
| No VRR, you hold FPS ≥ refresh | VSync on (clean image, low cost) |
| No VRR, you can't reach the refresh | VSync off + an FPS cap |
| Competitive shooter / esports | Latency first: VSync off (or VRR + cap) |
Where Neon helps
Choosing well between VSync and VRR starts with knowing your real numbers: your FPS and your monitor's refresh rate. Neon measures them and explains them in plain language — without promising magic latency.
- Reads your FPS, your monitor's real refresh rate and GPU usage, so you know whether you're holding your refresh before choosing VSync on or off.
- It doesn't invent input-lag figures or promise magic FPS: it shows real measurements and explains what they mean for your case.
- The wins it automates are Windows-side, safe and reversible, and every change is logged so you can undo it with one click.
- It never touches your BIOS or forces your hardware. Turning on VSync, G-SYNC/FreeSync or the FPS cap is always your call, with full control.
Common questions
- Should I turn VSync on or off for gaming?
- It depends on your setup. If your monitor has G-SYNC or FreeSync, enable VRR, use VSync only as a backstop, and cap FPS a few frames below the refresh rate. If you have no VRR but hold FPS at or above your refresh rate, VSync on gives a clean image. If you can't reach the refresh rate or you play competitively, VSync off with an FPS cap is usually best.
- Does VSync add input lag?
- Yes. VSync holds finished frames back until the monitor is ready to show them, adding extra time between moving your mouse and seeing the result on screen. The exact amount depends on the game and FPS. VSync always adds some latency compared with leaving it off — noticeable in competitive shooters, barely felt in relaxed games.
- What is the difference between VSync and G-SYNC or FreeSync?
- VSync syncs frames to the monitor's fixed refresh rate, which can halve your FPS and add input lag. G-SYNC (NVIDIA) and FreeSync (AMD) use variable refresh rate (VRR): the monitor waits for the GPU and refreshes exactly when a frame is ready. VRR removes tearing and the FPS-halving problem with far less latency, making it the modern best answer for most setups.
- Can VSync cut my FPS in half?
- Yes. Classic double-buffered VSync can only display frames at exact refresh moments. If your monitor is 60 Hz and the GPU can't reach 60 FPS, VSync falls to the next synced divisor, 30 FPS — a huge drop. VSync only feels good when you can hold FPS at or above the refresh rate.
Chasing the lowest possible latency? See the guide on how to reduce input lag, or if you get stutter, how to fix FPS drops and stutter.