Double Click Test
Check whether a mouse button is registering accidental double-clicks and compare suspicious bounce timing in your browser.
How to interpret double click results
Repeated ultra-fast duplicate clicks usually point to switch bounce rather than normal user error.
One suspicious pair is a warning sign, but repeated short intervals under the same button usually indicate wear inside the microswitch.
What to try next if the mouse keeps double clicking
Raise the OS double-click threshold only as a temporary workaround. The long-term fix is usually a switch replacement or a new mouse.
Confirm the issue on another port and machine before replacing hardware so you rule out firmware, USB hubs, or macro software.