How the double click test works
Click inside the test area with the left button, one click at a time, at a normal pace. About 50 clicks give a clear picture. Right and middle clicks are tracked on their own.
- The test records the time of each press and measures the interval between two presses of the same button.
- It shows the number of clicks, the shortest interval, the median interval and the number of bounces.
- A histogram sorts intervals into 10 ms bins from 0 to 200 ms, plus one bin for everything above 200 ms. Normal clicking lands to the right. Bounces show up on the far left.
- The verdict appears after 20 clicks and updates as you go.
How to read the result
| Verdict | Condition | What to do |
|---|---|---|
| No unwanted double click | No interval under 80 ms | Nothing. The switch is healthy. |
| Suspect | Exactly one interval between 30 and 80 ms | Click 50 more times at a slow pace and check again. |
| Unwanted double click | One interval under 30 ms, or two or more under 80 ms | The switch chatters. Try the fixes below. |
The 80 ms threshold is set above the fastest deliberate double clicks. The 30 ms threshold is below anything a finger can do.
Why mouse switches start to double click
Most gaming mice use mechanical microswitches, often made by Omron or Kailh. Over millions of clicks the contacts wear and oxidise, and the press starts to bounce. Static discharge can cause the same symptom for a while. Optical switches use a light beam instead of a metal contact, so they do not bounce this way.
How to fix it
- Unplug the mouse for 30 seconds, or remove the battery if it is wireless.
- Blow compressed air around the edges of the button while clicking it.
- Raise the debounce time in the vendor software if your mouse has that setting. 4 to 10 ms filters most bounces with no felt delay.
- Use a debounce utility if the vendor offers none.
- If the problem comes back, claim the warranty or replace the switch.
Limits of a browser test
The browser receives clicks after the driver and after the mouse firmware’s own debounce. A bounce that the firmware filters is invisible here, which is fine since games will not see it either. A release that drops during a drag, where the button lets go of an item on its own, is not measured by this test.
Next step
If the switches are clean, measure your sensor’s real sensitivity with the DPI analyzer. To check every button and the wheel at once, go back to the mouse test.
Frequently asked questions
What is mouse chatter?
Chatter, or double click bounce, is when one press of the button is registered as two. The metal contact inside the switch bounces and the mouse sends a second click a few milliseconds after the first.
What interval proves a double click problem?
Any gap under 30 ms between two presses. No finger can click that fast, so the contact is bouncing. Gaps between 30 and 80 ms are suspect, because a deliberate fast double click rarely goes below 80 ms.
How do I fix a mouse that double clicks?
Unplug it for 30 seconds, blow compressed air around the button, then raise the debounce time in the vendor software if it has one (4 to 10 ms is a common setting). If chatter persists, use the warranty or replace the switch, for example with an optical switch.
Should I double click on purpose during the test?
No. Click once at a normal pace each time. A deliberate double click can produce a short gap and make the result look worse than it is.
Does it test the right and middle buttons too?
Yes. The left button is the main test, but right and middle clicks are tracked separately in the same area.
Updated October 26, 2026