By LK Wood IV · 2026-07-04 · ~8 min read · St. Louis County, MO

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Buy a new cable. That is the most common advice for monitor ghosting, and I think it is close to the worst advice on the topic.

Ghosting happens inside the panel — pixels change colour too slowly, so the next frame arrives before the previous transition has finished — and you see the old image fading behind the new one. The fix is a setting your monitor already has. Almost nobody needs to spend money here, and the people who do spend it usually buy the wrong thing.

What ghosting really is

Ghosting is a faint trail or duplicate that follows moving objects across the screen.

The spec that governs it is gray-to-gray (GtG) response time, which is how long a pixel takes to change from one shade to another, measured in milliseconds. Lower is always better. Trails show up whenever GtG is slower than the gap between frames.

Here is the part that trips people up. Refresh rate and response time are different specs. A 144Hz monitor refreshes every 6.9ms and a 240Hz one every 4.2ms, but if the panel’s pixels take longer than that to finish switching, the previous frame is still visibly fading when the next one lands, which is why a box boasting 240Hz beside a vague one-millisecond claim tells you very little about how the thing will look when you flick a mouse across a bright desktop. A high refresh rate buys you nothing if the pixels cannot keep up with it.

One caution before you start changing settings: a trail that follows motion is ghosting, while a duplicate that sits still on a static screen is a different fault entirely, usually somewhere in the cable path. We pull those apart in the monitor shadow problem, and it is worth two minutes of your time, because the fixes for the two point in opposite directions and the wrong one costs money.

The quickest way to confirm you have ghosting is the Blur Busters UFO test, the same free tool monitor reviewers use. A UFO slides across the screen. A faint UFO trailing behind it is ghosting.

Fix #1: Set overdrive correctly (the sweet spot, not the max)

This is the fix that solves most ghosting, and it is already built into your monitor. Overdrive applies extra voltage to force pixels to switch faster, shrinking response time so transitions fit inside the frame window. Depending on the brand, it hides in the on-screen display menu under one of these names:

  • Overdrive (generic)
  • Response Time (Samsung, many others)
  • OD (short form)
  • Trace Free (ASUS)
  • Overshoot / AMA (some BenQ/Acer)

The mistake almost everyone makes is going straight to maximum. Too much overdrive causes inverse ghosting, also called overshoot: the pixel is driven so hard that it sails past its target shade before settling back, and what you get for that is a bright halo, a dark outline, or a purple corona riding around every moving object on the screen. It looks worse than what you started with.

Finding your sweet spot:

  1. Open the testufo.com UFO test at your monitor’s native refresh rate.
  2. Open your monitor’s OSD and find the overdrive setting.
  3. Cycle the levels one at a time, Off then Low, then Medium, then High, watching the UFO after each change.
  4. Pick the highest level that still has clean trails with no overshoot halo leading or following the UFO.

On most monitors the right answer is the middle setting. The maximum exists for the spec sheet.

Fix #2: Run your native refresh rate

If your monitor is not running at its advertised refresh rate, motion looks worse and ghosting gets more noticeable. Windows often defaults a new display to 60Hz.

Go to Settings, then System, then Display, then Advanced display, and set the refresh rate to the highest value your monitor supports. If your top refresh rate is not listed, you are probably bandwidth-limited by the cable or the port. Running at native refresh gives the panel the shortest frame window and lets a correct overdrive setting do its job. It is also the foundation for fixing screen tearing, a related but separate motion problem.

Fix #3: Rule out in-game motion blur

If you only see trails inside games and never on the desktop, your monitor may be innocent. Plenty of games ship with a Motion Blur effect switched on deliberately, and it is easy to mistake for panel ghosting. Open the game’s video settings and turn Motion Blur off. Turn off Film Grain while you are in there. If the trailing disappears it was a software effect, and no monitor tweaking was ever needed.

Fix #4: Know your panel type

Not all ghosting is fixable, and I would rather say so than sell you a settings change that cannot work. On a VA (Vertical Alignment) panel you will likely see black smearing, which is a dark trailing smear that drags behind objects moving across dark backgrounds and shows up worst in exactly the content people buy a VA panel’s contrast for, namely night scenes in games and dark films. That is inherent to how VA pixels transition in dark scenes — overdrive only partly helps. Nudging brightness and gamma up slightly in the OSD lessens it. You cannot eliminate it the way you can on an IPS or OLED panel.

If dark-scene smearing genuinely bothers you and you game in a dark room, no setting will save you. IPS ghosts far less. OLED effectively has none. Our guide on using an OLED as a PC monitor covers the motion-clarity trade-offs, and the 1440p vs 4K gaming breakdown helps you match a panel to the GPU you already own.

The cable question, answered honestly

For true ghosting a cable will not help. Response time is a property of the panel.

Where a cable does matter is a symptom that gets confused with ghosting, which is signal artifacts. A failing, damaged or under-spec cable can cause random sparkles, brief black flashes, or your monitor silently dropping to a lower refresh rate. A monitor stuck at 60Hz when it should be running 144Hz looks far worse in motion — and people reasonably call that ghosting. If the artifact is instead steady vertical or horizontal lines on the screen, the monitor’s own OSD menu settles the cable-versus-panel question in one press.

If you do see those symptoms, or your native refresh rate will not appear in Windows, ruling out the cable is worthwhile. A properly rated VESA-certified DisplayPort cable or an Ultra High Speed HDMI 2.1 cable guarantees the bandwidth for high-refresh signals. Do that to fix signal artifacts or a capped refresh rate. For trailing behind motion, go back to overdrive.

The fix ladder

In order:

  1. Confirm it is ghosting with the testufo.com UFO test. Trailing means ghosting; a leading halo means too much overdrive.
  2. Set overdrive to the sweet spot, the highest level with no overshoot halo, usually the middle option.
  3. Run your native refresh rate in Windows display settings.
  4. Turn off in-game Motion Blur if you only see it in games.
  5. Accept VA black smear as inherent, or move to IPS or OLED if it bothers you.
  6. Only then consider the cable, and only if you also have signal artifacts or a capped refresh rate.

Most people finish at step 2. It costs five minutes and nothing else.

What I cannot tell you is where your own panel’s sweet spot sits. Overdrive implementations differ enough between brands, and between models from the same brand, that the only way to find it is the UFO test running in front of the monitor you actually own.

Sources

Figures and behavior described are general to LCD (IPS/VA/TN) monitors in 2026; your exact overdrive labels and levels vary by brand. Found an error? Email hello@techfuelhq.com with the article URL.

Frequently asked questions

Is monitor ghosting permanent?
No. Ghosting is a real-time motion artifact, not permanent damage — it’s completely different from OLED burn-in or a dead pixel. It only appears while something is moving on screen, because it’s caused by pixels changing color too slowly. Adjust your monitor’s overdrive/response-time setting, run it at its native refresh rate, and the ghosting reduces or disappears. Nothing is physically wrong with the panel; it’s a settings-and-response-time issue, with the exception of inherent VA-panel dark smearing.
Why is my 144Hz (or 240Hz) monitor still ghosting?
Because a high refresh rate does not guarantee fast pixels. A 144Hz monitor draws a new frame every 6.9ms and a 240Hz panel every 4.2ms, but if the panel’s gray-to-gray (GtG) pixel transition takes longer than that frame window, the previous frame is still visibly fading when the next one arrives — that trailing smear is ghosting. Refresh rate and pixel response time are two different specs. The fix is your monitor’s overdrive setting, which speeds up the pixel transitions to fit inside the frame window.
What overdrive setting should I use?
The sweet spot, not the maximum. Overdrive (also labeled Response Time, OD, Trace Free, or Overshoot depending on the brand) applies extra voltage to make pixels switch faster. But turning it to the highest setting usually causes inverse ghosting — the pixel overshoots its target and leaves a pale halo or dark ‘corona’ around moving objects, which looks worse than the original ghosting. Cycle through the levels (Off, Low/Normal, Medium, High) while watching a motion test, and pick the highest one that has clean trails with no bright overshoot halo. On most monitors that’s the middle setting.
Does a bad cable cause monitor ghosting?
Not true ghosting. Real ghosting is a pixel response-time problem inside the panel, so a new cable won’t fix it. What a failing or under-spec cable can cause is signal artifacts — random sparkles, black flashes, or the monitor silently dropping to a lower refresh rate — which can look similar to ghosting and are easy to confuse with it. If you see those symptoms, or your monitor won’t hold its advertised refresh rate, a properly rated DisplayPort or HDMI cable is worth ruling out. If your only symptom is trailing behind motion, it’s response time, not the cable.
How do I test my monitor for ghosting?
Use the Blur Busters UFO test at testufo.com — it moves a UFO across the screen at a set speed. If a faint duplicate trails behind it, that’s ghosting; if a bright or dark outline leads or follows it, that’s inverse ghosting from too-much overdrive. Run the test while you cycle your overdrive levels to find the cleanest setting for your panel. It’s the same tool reviewers use, it’s free, and it takes about a minute.
Can VA panel black smearing be fixed?
Not completely — it’s an inherent limitation of VA (Vertical Alignment) panels. VA pixels transition slowly in dark scenes, so you get a dark trailing smear behind moving objects on black or near-black backgrounds, even with overdrive on. You can lessen it by nudging the monitor’s brightness or gamma up slightly and by using overdrive, but you can’t eliminate it the way you can on an IPS or OLED panel. If dark-scene smearing bothers you and you game in dark rooms, the real fix is a different panel type, not a setting.

Evidence ledger

Last updated
Methodology
This guide was written and edited by Lowell K. Wood IV in St. Louis County, MO. Specs and prices verified against vendor and project documentation current on the date above. Full editorial standard: methodology.
Update log
  • 2026-08-15 — Last reviewed and updated.
Corrections
Spotted an error or a stale number? Email hello@techfuelhq.com. Confirmed corrections are added to the update log above.

About the author

Written by Lowell K. Wood IV, who builds and runs TechFuelHQ from St. Louis, Missouri.