I increased the polling rate but I can't really tell the difference. Why?

I increased the polling rate but I can't really tell the difference. Why?

This may be related to your monitor's refresh rate. A higher polling rate makes the mouse more responsive, but the image is ultimately rendered by the monitor — if the monitor isn't high refresh rate, even a much higher polling rate will make less of a visible difference. This is normal and not a problem with the mouse or settings.