The best hidden switch in Windows: adjust your computer for best performance. It’s buried in the control panel on both Windows 7 and 10. The easiest way to get there is to hit Start on either system and type “performance” without the quotes. You can also get there in 7 by right-clicking on My Computer/Advanced system settings/Performance. Windows 10: Windows key + X/System settings/Advanced system settings/Performance. “Adjust for best performance” turns all of the useless visual fluff off and you’ll see an increase in system speed.