How the mouse test works
- Click inside the test area with every button: left, right, middle (press the wheel) and the side buttons “Back” and “Forward”.
- Scroll the wheel up and down inside the area.
- Click the left button several times, one click at a time. If two clicks arrive within a few milliseconds, the test flags an unwanted double click.
What does “unwanted double click” mean?
Humans can hardly click faster than about 80–100 ms apart. If your mouse registers two clicks just 10–50 ms apart when you clicked once, the micro switch is “bouncing”. This is a very common wear defect, especially in mice with Omron switches after one to three years. Symptoms: files open by accident, drag & drop breaks, guns fire twice in games.
Use the slider to adjust the detection threshold; 80 ms is a good default.
Mouse double clicking? What helps
- Increase debounce time: many gaming mice (Logitech G Hub, Razer Synapse, SteelSeries GG) have a debounce setting.
- Compressed air: dust in the switch can cause bouncing. Blow firmly into the gap under the button.
- Use the warranty: many manufacturers accept double clicking as a warranty defect.
- Replace the switch: with a soldering iron the micro switch can be replaced for a few dollars.
- Changing the double-click speed in your OS won't fix it, because the fault is in the hardware.
Scroll wheel jumps or scrolls the wrong way
If the wheel jumps (e.g. scrolling down also counts up), the encoder is dirty or worn. Compressed air sometimes helps; otherwise the mouse needs replacing.
Side buttons don't work
If the test shows no clicks for “Back”/“Forward”, the buttons may be remapped in the manufacturer's software. Reset them to default there.