Quick SupportRefresh Rate & Motion Test
Find out what your screen is actually refreshing at, then watch something move across it to check for ghosting. If you paid for a high refresh rate monitor, this is the two-minute check worth doing — plenty of them arrive on a desk and quietly run at 60.
What your screen is running at
Leave this tab in front while it measures — three seconds, and don't switch away, or the browser slows the page down and the number comes out wrong.
—Hz
Press measure and sit still for three seconds.
- Frame time
- — ms
- Frames seen
- —
- Steadiness
- —
Ghosting and motion blur
Follow one of the squares with your eyes as it crosses — don't stare at a fixed point. On a good panel it stays a crisp square. A smeared trailing edge is normal LCD behaviour; a distinct second copy of the square behind it is ghosting, and a dark halo in front is overshoot from the monitor's overdrive setting turned up too far.
Ghosting shows up worst on the grey background — that's why it's the default, and why monitor reviewers use it.
Got a lower number than you paid for?
This is the usual reason, and it's a setting rather than a fault. Windows puts a new monitor on 60 Hz and leaves it there — it doesn't ask, and nothing ever tells you. Turning it up takes about fifteen seconds:
- Windows 11: Settings → System → Display → Advanced display → "Choose a refresh rate".
- Windows 10: Settings → System → Display → Advanced display settings → Display adapter properties → Monitor tab.
- Mac: System Settings → Displays → Refresh Rate.
If the higher rate isn't offered at all, it's almost always the cable or the port. A high refresh rate at high resolution needs DisplayPort or a properly rated HDMI cable — the lead that came in the box with the monitor often isn't one, and the HDMI port on a lot of graphics cards tops out lower than the DisplayPort beside it.