Aero Glass not recommended
The Aero Glass theme is over 5 times slower than
Windows Basic, Classic or Standard.
For best scrolling and video performance, we recommend not using Aero.
1 On the taskbar, click Start / Control Panel.
2 In Appearance and Personalization, click Change the theme.
3 Scroll down to Basic and High contrast themes.
4 Select Windows Basic or Windows Classic.