What causes inverse ghosting (coronas) on a gaming monitor?

Inverse ghosting is caused by excessive voltage overshoot from an overly aggressive Overdrive or Response Time setting (such as "Extreme" or "Fastest"). The monitor pushes extra voltage to force the liquid crystals to change color faster, but they overshoot the target luminosity, creating a glowing pale or purple halo behind moving objects.

Why should I avoid the "Fastest" response time setting on LG UltraGear or Samsung monitors?

Monitor manufacturers use the "Fastest" or "Extreme" setting purely to achieve marketing claims like "1ms GtG" in lab tests. In actual gameplay, this setting causes severe pixel overshoot error (often over 25%), making moving enemies look blurry with distracting glowing outlines.

What is the best Overdrive setting for ASUS monitors?

For ASUS ROG and TUF monitors, Trace Free 60 (or Variable OD Level 3) is the measured sweet spot. Trace Free 80 and 100 introduce extreme inverse ghosting, while Trace Free 0 to 40 causes noticeable motion smearing.

Pixel Response Time & Voltage Overshoot

Monitor Overdrive & Inverse Ghosting Test Studio

Simulate pixel transition overshoot (coronas), eliminate smearing without glowing halos, and find the exact optimal OSD Overdrive level for your gaming monitor brand.

Motion Artifact Simulator

Live Pixel Transition Canvas

Speed:

Optimal Overdrive: Crisp Transition

Brand Recommendation Matrix

Exact OSD Overdrive Level for Your Monitor Brand

Select your monitor brand to see the exact menu setting tested to produce zero inverse ghosting.

LG UltraGear Calibration Profile

OSD Setting Name: `"Response Time"`

Recommended Setting (Sweet Spot)

Fast

Provides sub-3ms average GtG transition without triggering voltage overshoot halos.

Setting to AVOID (Do Not Use)

Faster

"Faster" introduces severe voltage overshoot (cyan coronas) at all refresh rates.

Monitor Overdrive & Inverse Ghosting Test Studio

Live Pixel Transition Canvas

Exact OSD Overdrive Level for Your Monitor Brand

OSD Setting Name: "Response Time"

OSD Setting Name: `"Response Time"`