To change the mouse pointer speed in Windows 10 use the Mouse Properties option window! (... See Image 1). The fastest way to open it, is via the Windows 10 Control Panel and a click on the Mouse icon! Or using the keyboard shortcut Windows + R and the command control.exe /name Microsoft.Mouse.
Jiffy is an informal term for any unspecified short period of time, as in I will be back in a jiffy. From this it has acquired a number of more precise applications for short, very short, or extremely short periods of time.
Part of the Computing fundamentals glossary: The term jiffy refers to a brief, usually unspecified, interval of time . In scientific and lay applications, it can refer to any of several specific time spans. The most common interpretation is 0.01 second. In computer engineering, the length of time between successive microprocessor clock cycle s is sometimes called a jiffy. This interval gets shorter as clock speeds increase.