ScreenCheckv1.0
motion
1 min
Client-Side Local

Stutter Demonstration

Simulates different severities of frame-pacing stutter (Smooth, Minor, Moderate, Heavy) to train your eye in distinguishing monitor panel flaws from GPU or software frame-pacing issues.

Testing Instructions
  1. Switch between Smooth, Minor Stutter, Moderate Stutter, and Heavy Stutter modes.
  2. Observe how irregular frame injection produces visual judder even at high average FPS.
  3. Understand how micro-stutter originates in game engines or GPU drivers rather than display panels.
Interaction Controls
Next Pattern
→Space
Previous Pattern←
Exit FullscreenEsc
Mouse / TouchTap screen to cycle
Educational Stutter Simulation: This tool deliberately injects artificial micro-delays into the motion stream to demonstrate the perceptual difference between smooth VSync delivery and erratic frame delivery. Stutter is artificially generated, not measured from your display panel.
Motion Controls
Velocity (px/s)
Motion Direction
Background Contrast
Simulated Stutter Mode:

What This Test Checks

  • Perceptual distinction between consistent VSync motion and irregular frame delivery.
  • Visual judder produced by artificial micro-hitch injection.
  • Sensitivity of the human visual system to sub-frame timing variations.

How to Perform the Test

  • Start in "Smooth" mode to observe ideal, uninterrupted motion pacing.
  • Switch to "Minor Stutter" to see subtle periodic micro-hitches typical of shader compilation or background tasks.
  • Switch to "Moderate" and "Heavy" to observe severe judder.
  • Notice that average FPS remains relatively high even when motion quality degrades severely.

What to Look For

  • Smooth mode: Seamless continuous movement across the display.
  • Minor Stutter: Occasional micro-snags that disrupt fluid eye tracking.
  • Heavy Stutter: Pronounced judder and visual hitching.

Common Display Problems & Diagnostic Guidance

Shader Compilation Stutter in PC Games

A notorious problem in modern PC games where compiling graphical shaders on-demand freezes the render pipeline for 50–200ms, creating jarring stutter identical to our Heavy Stutter preset.

Stutter vs Low FPS

A steady 30 FPS can look and feel more consistent to play than a fluctuating 60–120 FPS setup with severe frame-pacing irregularities.

Frequently Asked Questions

Is this stutter being measured from my PC?

No. This is an educational demonstration tool that intentionally synthesizes micro-stutter to help you identify and diagnose motion anomalies.

How do gamers fix stutter in native games?

Using VRR (G-Sync / FreeSync), capping the frame rate slightly below the monitor’s max refresh rate (e.g. 141 FPS on a 144Hz screen), and closing background CPU-heavy applications.