how many Hz is my mouse
Polling rate decides how many times per second the mouse reports its position to the computer, and many mice ship at 125 Hz even though they can do 1000 Hz or more. This page opens the meter ready to go: move the cursor fast in circles inside the area and read the Hz.
It is the default rate of many regular USB mice. If the mouse allows it, raise it in the manufacturer software.
Readings between 900 and 1000 Hz during fast movement count as 1000 Hz. Much lower values suggest a browser without pointerrawupdate.
It is how many times per second the mouse reports its position and buttons to the computer. A 1000 Hz mouse sends a report every 1 ms, and a 125 Hz one sends a report every 8 ms.
For everyday use 125 Hz is enough. In competitive games 1000 Hz is the standard, and rates of 2000 to 8000 Hz bring a small gain that depends on a high refresh rate monitor and a CPU able to process the events.
Almost never. The mouse may be set to a lower rate, in a power saving mode, or the browser may not offer one event per report. Check the mouse software and use a Chromium browser.
Yes, and wireless mice usually show more variation between windows. Compare the result with the mouse at the same distance from the receiver and with a charged battery.