Refresh Rate Test

Q: Why does the Hz number wobble?

Browsers schedule frames near display vsync, but OS load and timers cause jitter. Use the median and 1% low for a truer sense of refresh and pacing stability.

Q: What can I do from the cog menu?

The cog menu lets you pause the live meter or export the captured frame-time samples to CSV for further analysis.

Press Start Test to open the full-screen meter. The number shows a robust median Hz, and the sparkline visualises frame-time stability. Use the cog menu to pause the test or export the captured frame-time samples.

Click Start Test and enter fullscreen.
Watch the live Hz and the frame-time sparkline for pacing.
Use the cog menu to pause the meter or export the frame-time samples to CSV.

Open Motion Response Test

Refresh Rate — FAQ

Why does the Hz number wobble?

Small variation is normal due to OS/browser scheduling. Use the median and 1% low to assess stability.

What can I do from the cog menu?

You can pause the live meter or export the captured frame-time samples to CSV for further analysis.