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Refresh & MotionOptical Matrix

Monitor Frame Skipping Test — Check Dropped Frames

Verify whether your display controller is physically rendering every received frame using the camera shutter chase matrix test.

OPTICAL CHASE PATTERN RUNNING
Photography Test: Take a photo of this screen using your smartphone camera at a 1/10s or 1/5s shutter speed.
Continuous solid blocks = Zero skipped frames
Observed Cadence
—
Presentation rate
Expected Interval
—
1 frame budget
Potential Misses (~2x)
0
Presentation misses
Total Samples
0
Monitored frames

Camera Shutter Verification Protocol

Because human visual persistence cannot reliably count 144 separate frames in a single second, camera photography provides undeniable proof of panel frame delivery:

How to Photograph:
  1. Click Fullscreen Camera Test above.
  2. Set your smartphone or DSLR camera to Manual / Pro mode with shutter speed at 1/10s (0.1s).
  3. Snap a photo of the moving numbered square matrix.
  4. Inspect the photo: A continuous trail of illuminated blocks confirms 100% frame delivery with zero skips.

Frequently Asked Questions

What is monitor frame skipping?

Frame skipping occurs when a display accepts a high refresh rate signal (e.g. 144Hz) from the GPU, but the monitor scalar hardware is unable to physically refresh the panel at that speed and drops every other frame, effectively behaving like 72Hz or 60Hz.

How do I test for frame skipping with a camera?

Open this test in Fullscreen, then take a photograph of your screen with a camera or smartphone using a slow shutter speed (such as 1/10 or 1/5 second). In the photo, you should see an unbroken solid block of illuminated white squares. Any black gap in the sequence indicates a skipped frame.

Can frame skipping happen when overclocking a monitor?

Yes. Monitor overclocking (e.g., pushing a 60Hz panel to 75Hz) frequently triggers frame skipping if the panel controller cannot process the elevated pixel clock.

Related Refresh Tools

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Frame Time Test

ms

Analyze frame duration in milliseconds (e.g. 16.6ms for 60Hz, 6.94ms for 144Hz) and frame time variance.

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Ghosting Test

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Assess pixel response time, trailing artifacts, inverse ghosting (overshoot), and motion smearing.

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Screen Tearing Test

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Expose horizontal frame tearing lines and buffer synchronization mismatches across fast horizontal pans.

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