Monitor Motion Blur, Ghosting & Overdrive UFO Test
Test your gaming monitor for pixel response time (GtG), LCD ghosting trails, and inverse overshoot coronas. Compare high refresh rate multi-lane persistence blur and simulate Black Frame Insertion (BFI / DyAc / ELMB).
Standard esports tracking speeds. 960 px/s represents fast mouse flicking in CS2/Valorant.
Simulate LCD voltage overdrive response: Off causes trailing smear, Extreme causes inverse coronas.
Simulates DyAc+ (BenQ), ELMB (ASUS), or ULMB (NVIDIA). Strobes black frames between refresh cycles to eliminate retinal persistence blur.
Understanding Ghosting vs. Inverse Overshoot
Modern high-refresh gaming monitors (Fast-IPS, OLED, and Fast-TN) manage pixel transitions differently. Here is how to diagnose your display results:
Occurs when liquid crystals take longer than the refresh window (e.g., >4.16ms on a 240Hz panel) to shift between color states. You see a dark, blurry tail trailing behind moving objects.
Occurs when monitor overdrive voltage is pushed too aggressively ("Extreme" mode). Pixels overshoot their target color value, leaving a bright white or cyan ghost halo ahead of or behind the moving target.
Even with instantaneous 0.03ms OLED pixel response, moving objects blur on sample-and-hold displays due to the human retina holding the frame on the eye. Only higher Hz (360Hz+) or backlight strobing (BFI / DyAc) clears persistence blur.
Frequently Asked Questions: Motion Blur & Pursuit Testing
What is the difference between GtG and MPRT?
Gray-to-Gray (GtG) measures how fast a physical pixel changes from one color to another. Moving Picture Response Time (MPRT) measures how long a pixel remains continuously visible on your retina. 1ms GtG can still have 16.7ms MPRT on a 60Hz display.
Should I enable Black Frame Insertion (BFI) while G-Sync is active?
Most monitors cannot run BFI and Variable Refresh Rate (VRR/G-Sync) simultaneously because strobing at fluctuating framerates causes severe screen flicker. Premium monitors supporting ASUS ELMB-Sync or BenQ DyAc+ with G-Sync offer the best of both worlds.