&gt;And Xp feels fast too, it wasn&#x27;t, 7 was faster, but it felt the other way.<p>Desktop composition adds a frame or more of latency. If you disable it (sadly not possible in Windows 8 and later) UI interaction feels noticeable more responsive. But most people run Windows 7 with composition on, so for them it makes sense that &quot;XP felt faster&quot;