What causes motion blur?
Motion blur on modern monitors has two main causes: slow pixel response (which produces ghosting) and sample-and-hold blur (which is perceptual, caused by the eye tracking moving objects across a static frame). The fixes are different for each, so the first step is figuring out which one you have.
Ghosting looks like a dark smear trailing a moving object. It is worse on budget panels, in dark scenes, and at high motion speeds. The fix is to speed up pixel response — usually with overdrive.
Sample-and-hold blur looks like general smudging of everything in motion, even on panels with perfect pixel response (like OLEDs). It is caused by the eye tracking a moving object across a frame that is held static for the full refresh interval. The fix is to either increase the refresh rate (so each frame is held for less time) or to strobe the backlight (so each frame is only briefly visible).
Step 1: Enable and tune overdrive
Overdrive (also called Response Time, OD, or RT in monitor menus) is the single most effective fix for ghosting. It pushes extra voltage through the liquid crystal to make it rotate faster. Here is how to tune it:
- Open your monitor's OSD (the physical buttons on the monitor) and find the Response Time, OD, or Overdrive setting.
- Set it to Off and run the ghosting test at 960 px/s on grey. Note the length of the smear — this is your baseline.
- Set overdrive to Low and re-test. The smear should be shorter.
- Set overdrive to Normal (or Medium on some monitors) and re-test. Smear should be much shorter.
- Set overdrive to High (or Fast) and re-test. Smear might be even shorter, but watch for a bright halo around the object — that is overshoot.
- Set overdrive to Extreme (or Max) and re-test. You will almost certainly see heavy overshoot — bright coloured halos trailing the object.
- Pick the highest setting that produces no visible overshoot. For most monitors and most refresh rates, that is Normal or High.
Step 2: Verify your refresh rate is at maximum
Higher refresh rates reduce motion blur per frame even with the same pixel response. A 144 Hz monitor at 60 Hz has the same motion blur as a native 60 Hz monitor — the panel is just refreshing less often. Always run at your monitor's maximum refresh rate. Use our refresh rate test to verify.
Step 3: Enable G-Sync or FreeSync
VRR does not directly reduce motion blur, but it lets you run at high frame rates without tearing or stutter, which means more frames per second and less motion blur per frame. Enable G-Sync (NVIDIA) or FreeSync (AMD) in your GPU control panel, then enable it in your monitor's OSD. Cap your game FPS a few frames below the monitor's max refresh rate (e.g. 141 FPS on a 144 Hz monitor) to keep VRR active.
Step 4: Try motion blur reduction (backlight strobing)
Many gaming monitors have a backlight strobing feature that mimics CRT motion clarity by flashing the backlight only during the pixel transition phase. This eliminates most sample-and-hold blur, at the cost of brightness and potentially visible flicker. The common names:
| Brand | Name | Notes |
|---|---|---|
| NVIDIA | ULMB (Ultra Low Motion Blur) | Original strobing tech. Bright, low flicker. Only on G-Sync monitors. |
| NVIDIA | ULMB 2 | 2023 update. Higher brightness, less flicker. Requires G-Sync processor. |
| ASUS | ELMB (Extreme Low Motion Blur) | ASUS's strobing. Often combined with FreeSync on budget monitors. |
| BenQ/Zowie | DyAc / DyAc+ | BenQ's strobing. Popular in CS:GO esports. |
| LG | 1ms Motion Blur Reduction | LG's strobing. Often caps refresh rate at 120 Hz. |
| Samsung | MBR (Motion Blur Reduction) | Samsung's strobing. Bright but visible flicker. |
| AOC | MBR | Same as Samsung. Bright but flickery. |
To use strobing, you usually need to disable G-Sync/FreeSync (most monitors cannot do both simultaneously). Set your refresh rate to the strobing-supported rate (usually 100, 120, or 144 Hz — not the max). Then enable strobing in the OSD.
Strobing is best for fast-paced competitive games where motion clarity matters more than brightness. It is worse for desktop use, slow games, and HDR content. Try it both ways and decide for yourself.
Step 5: Use a faster cable
If you are running a 4K 144 Hz monitor on an old HDMI cable, the cable might be silently dropping refresh cycles, causing judder that looks like motion blur. Use DisplayPort 1.4 (supports up to 4K 240 Hz with DSC) or HDMI 2.1 (supports up to 4K 120 Hz without DSC). Use the cable that came with the monitor; if you need a longer one, buy a certified premium cable rated for your resolution and refresh rate.
Step 6: Lower in-game graphics settings
More frames per second means each frame is held for less time, which means less motion blur per frame. If your game is running at 60 FPS, dropping to medium settings to hit 144 FPS will dramatically reduce motion blur — even though the panel response time has not changed. Lower the settings that affect FPS most: shadows, volumetric fog, anti-aliasing, post-processing.
Step 7: When to give up and buy a new monitor
If you have tried all the above and motion blur is still bad, your panel is the bottleneck. This is typical of budget VA panels, which have slow dark-to-mid-tone transitions that no setting can fix. The upgrade path:
- Budget upgrade: Fast IPS panel with 1ms GtG and 144 Hz+ refresh. Cost: $200-400. Best bang-for-buck improvement.
- Mid-range upgrade: 240 Hz IPS panel with good overdrive. Cost: $400-700. Noticeable improvement for competitive gaming.
- Endgame upgrade: 240 Hz+ OLED. Cost: $700-1500. The best motion clarity available — perfect pixel response plus high refresh rate.
See our best gaming monitors guide for specific recommendations by budget and use case.