Monitor ghosting is a trail or duplicate-looking image that follows moving objects on screen because the display’s pixels are not changing state quickly enough. It is most obvious in dark transitions, fast camera pans and high-contrast moving objects.
It is primarily a display response-time problem, not a graphics-card defect.
Ghosting vs motion blur vs screen tearing
| Problem | What it looks like | Main cause |
|---|---|---|
| Ghosting | Visible trail behind moving objects | Slow pixel transitions |
| Inverse ghosting | Bright/dark halo or “corona” ahead/behind motion | Overdrive set too aggressively |
| Motion blur | General loss of clarity during movement | Sample-and-hold display behaviour, persistence and eye tracking |
| Screen tearing | Horizontal break where two frames appear at once | GPU output and display refresh are out of sync |
What causes monitor ghosting?
LCD pixels need a finite amount of time to transition from one colour/brightness state to another. If a transition is slower than the time available between refreshes, some of the previous state remains visible while the object has already moved.
This is why two monitors with the same refresh rate can have very different motion clarity.
Refresh rate is not the same as response time
A 144Hz monitor refreshes every 6.94ms; a 240Hz monitor refreshes every 4.17ms. But those figures do not tell you how quickly every pixel transition actually completes.
A “1ms” number printed on a box is usually a best-case measurement under a particular test method or overdrive setting, not a guarantee that every transition takes one millisecond.
Our 75Hz vs 144Hz vs 240Hz guide explains the refresh-rate side separately.
How to test for ghosting
The easiest visual test is the Blur Busters TestUFO Ghosting Test. It scrolls UFO images across the display at a controlled speed so you can compare trails at different monitor settings.
Run the TestUFO ghosting test.
For a meaningful comparison:
- let the monitor warm up;
- use its normal refresh rate;
- keep the browser at 100% zoom;
- compare each available overdrive/response-time mode; and
- watch both dark and light transitions.
Fix 1: adjust the monitor’s overdrive setting
Monitor makers use names such as Overdrive, Response Time, Trace Free or AMA for pixel-response acceleration.
Too little overdrive can leave visible ghost trails. Too much can overshoot the target pixel value and create inverse ghosting, often seen as bright or dark coronas.
Blur Busters documents this exact trade-off: maximum overdrive can create obvious inverse-ghosting artifacts.
See Blur Busters’ overdrive examples.
In practice, the middle or “Normal/Fast” setting is often better than the maximum mode.
Fix 2: use the monitor’s intended refresh rate
Check Windows or your GPU control panel and make sure the display is actually running at the refresh rate you bought it for.
A 165Hz monitor accidentally left at 60Hz will have poorer motion clarity, although changing refresh rate does not magically fix slow pixel transitions.
Fix 3: try different overdrive settings with VRR enabled
Variable refresh rate can expose another wrinkle: an overdrive setting that looks excellent at 165Hz may overshoot badly when the display is running at 60–80Hz.
Some gaming monitors compensate dynamically; others do not. If you see inverse ghosting at low VRR frame rates, try reducing overdrive by one level.
Will a new cable fix ghosting?
Usually no. A bad HDMI/DisplayPort cable can cause signal dropouts, sparkles, black screens or reduced available refresh rates, but ordinary LCD ghosting is a pixel-response characteristic of the monitor panel.
A cable only matters indirectly if it prevents the display from running at its intended refresh rate.
Will updating GPU drivers fix ghosting?
Usually no. Drivers can solve rendering, VRR and output-mode problems, but they cannot make a physically slow LCD pixel transition faster.
If a trail appears in a monitor-side motion test regardless of the game, the display itself is the likely source.
Can OLED monitors ghost?
OLED pixels switch far faster than typical LCD pixels, so classic slow-transition ghosting is dramatically reduced. OLED can still show sample-and-hold motion blur, judder, VRR flicker and other artifacts, but the characteristic LCD smear is much less of a problem.
When should you replace the monitor?
If the best available overdrive mode still produces distracting trails and the monitor is otherwise operating correctly, there is no software fix that changes the panel’s fundamental response characteristics.
For competitive gaming, look for independent response-time measurements across the full refresh-rate range rather than relying only on the manufacturer’s quoted “1ms” figure.
Quick answer
Gaming ghosting is usually caused by slow pixel response. Test it with TestUFO, choose the best overdrive setting, confirm your refresh rate, and avoid maximum overdrive if it creates bright inverse-ghosting halos.
