Pointer delay can come from a weak battery, crowded 2.4 GHz radio traffic, power saving, a damaged pairing record or a driver problem.
Short answer: Replace or recharge the battery, move the mouse closer, test away from USB 3 devices and re-pair only after a restart.
Check the likely cause first
- Compare the mouse on another computer and another mouse on this Windows PC.
- Move Wi-Fi temporarily to 5 GHz or 6 GHz to test 2.4 GHz interference.
- Check whether lag begins only after sleep or only under heavy CPU load.
Fix it in the safest order
- Charge the mouse and clean its sensor; use a plain nonreflective surface.
- Restart Windows and move wireless receivers, hubs and external drives away from the mouse path.
- Remove the Bluetooth device and pair it again with the manufacturer’s documented method.
- Install Windows updates and the PC maker’s Bluetooth driver; review adapter power-management settings if lag follows sleep.
Change one thing at a time and retest. That makes it easier to identify the cause and undo a setting if the result is worse.
How to confirm the fix
Move the pointer continuously, wake the PC twice and test during normal Wi-Fi use for at least ten minutes.
What not to do
- Do not download drivers from generic driver-update sites.
- Do not disable every power-management setting before identifying the affected adapter.
When to contact support
Contact the PC or mouse vendor if the same hardware combination lags after current official drivers and a clean re-pair.
For more step-by-step help, browse the PHWhy topic hubs or use the site search for the exact error message.
