Hardware diagnostic
Double Click Test
Every click is timestamped and the gap to the previous one measured in milliseconds — revealing both your double-click speed and any phantom doubles your mouse produces on its own.
Click here — single or double
Single-click at a relaxed pace to check for chatter (unintended doubles), or double-click deliberately to measure your double-click speed.
How to read your results
Run the test two ways. First, single-click slowly — one relaxed click per second, twenty or thirty times. Every gap should be several hundred milliseconds. If warnings appear during slow single clicking, your mouse is registering clicks you never made: that's switch chatter, the classic wear fault that makes windows close, files drag, and items double-fire in games.
Second, double-click on purpose as fast as you can. Now the short gaps are legitimate — the smallest number you can produce intentionally is your double-click speed. Most people land between 150 and 250 ms; serious clickers reach around 100 ms. The point of separating the two runs is that the same measurement means opposite things: a 60 ms gap is a defect when you meant one click, and an impressive reflex when you meant two.
A single flagged gap across hundreds of clicks can be noise — a slip of the finger or a bounced tap. Chatter worth acting on is repeatable: if slow, deliberate clicking produces warnings every few clicks, the switch is failing and will get worse. Try the same mouse in another USB port and at a different polling rate first, then clean the switch; if it persists, the switch (or mouse) needs replacing.