How to compare mouse response with battery saver on

Your mouse feels slower when your laptop is running on battery, or clicks seem to miss after battery saver turns on. That does not automatically mean the mouse is faulty. A power setting, wireless connection, or the browser itself can affect what you notice.

Compare the same mouse actions with the power-saving setting off and on. The Mouse Test checks button input, scrolling, double-clicks and polling rate, which can help show whether the difference is consistent.

Compare the mouse with battery saver off and on

1. Open the Mouse Test in the browser you normally use. Keep the laptop in the same location and use the same mouse, surface, USB port or wireless receiver for both runs.
2. With battery saver off, test each mouse button, scroll the wheel at a steady pace, and check the double-click response. Look at the polling rate shown by the test. Repeat the actions a few times and note any missed input or unusual delay.
3. Turn on the power-saving mode. In Windows 11, open Settings › System › Power & battery › Energy saver. On a Mac, open System Settings › Battery › Low Power Mode. The name or availability can vary by device and macOS version.
4. Return to the same browser tab and repeat the same clicks and scrolling at a similar pace. Check the polling rate again, and note whether input is missed or feels different.
5. Turn the power-saving mode off and test once more. If the result returns to what you saw in the first run, the difference is more likely tied to the power state than to a sudden mouse fault.

For a fair comparison, test on battery both times if the setting is meant to activate only when unplugged. Avoid changing the mouse surface, browser, USB connection, or open applications between runs. Those changes can affect the result too.

What the result means

Clicks and scrolling behave the same in both runs

The test did not show an obvious change in mouse input when battery saver was on. If the pointer still feels slower in a game or another app, check that app's settings and the operating system's pointer speed. The test checks mouse events in a browser, not every part of how an app draws the pointer.

The polling rate is lower or less steady with battery saver on

Polling rate is how often the mouse sends updates to the computer. A rate of 125 Hz means updates are spaced about 8 milliseconds apart, while 1000 Hz means about 1 millisecond apart. A browser estimates the rate from the events it receives, so a changing result does not prove that the mouse itself changed its hardware setting. Browser activity and system load can affect what the test sees.

The rate looks similar, but clicks or scrolling seem delayed

A similar polling rate with a different feel points away from a simple change in report frequency. The browser may be busy, the wireless link may be unreliable, or pointer speed and acceleration may make movement feel different. Repeat the comparison after closing demanding apps, then try another browser if the problem remains.

One or more inputs fail in both runs

If the same button or scroll direction fails with battery saver both on and off, investigate the mouse itself, its connection, or its software. Power mode alone is less likely to explain an input that is consistently missing.

How to fix a change in mouse response

1. Check whether the difference repeats. Run the comparison again, then switch battery saver off and repeat. A single odd polling-rate reading can come from normal variation in browser event timing.
2. Check the mouse connection and battery. For a wireless mouse, replace or recharge its battery and move the receiver to a nearby port. For a Bluetooth mouse, disconnect and reconnect it. If possible, test a wired mouse to see whether the wireless link is involved.
3. Check pointer speed. On Windows 11, open Settings › Bluetooth & devices › Mouse and review the pointer speed. On a Mac, open System Settings › Mouse and review tracking speed. Do not change the speed between comparison runs, but adjust it afterward if the pointer itself feels too slow.
4. Compare power modes while plugged in and unplugged. In Windows 11, use Settings › System › Power & battery › Energy saver and check the available power mode options there. On a Mac, review System Settings › Battery › Low Power Mode. Some laptops apply power settings differently when connected to a charger.
5. Reduce competing system activity. Close unusually busy apps and browser tabs, then repeat the test. A heavy workload can delay browser input handling, even when the mouse is working normally.
6. Reconnect or update the mouse software. Unplug and reconnect a USB receiver, or remove and pair a Bluetooth mouse again. If the problem only happens in one app, check that app's input or pointer settings before reinstalling mouse drivers.

What this browser test can and cannot show

The test can show whether button presses, scrolling, double-clicks and the observed polling rate differ in the browser between two power states. It cannot measure every part of pointer latency, which is the time between moving or clicking and seeing the result on screen. It also cannot tell you whether a change came from the mouse, the operating system, browser scheduling, or a busy computer.

If the mouse behaves normally in the test but feels delayed only in one game, compare that game's settings and performance rather than treating the browser result as a complete hardware diagnosis.