Run the check
Keep pattern speed and refresh rate fixed in the ghosting test.
Compare each response-time preset available on your monitor.
Return to the least distracting setting in actual use, not the most aggressive label.
Read the result
A halo that strengthens as overdrive increases differs from ordinary smearing.
Limits and next step
Preset names and behavior vary by monitor; the page cannot set overdrive.
Repeat the check after changing one setting or connection. Keep a record of what changed before deciding whether the device needs service.