Windows remove delay before aero-peek on alt+tab

Aero peek is actually pretty damn useful to tell which program window you’re tabbing into — but the delay is a good few seconds.

I found a SuperUser post that explains how to set this delay.

http://superuser.com/questions/45259/windows-7-alttab-transparent-windows-effect-delay

Set a registry key at:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\AltTab.

In that key, create the following DWORD value: LivePreview_ms and set it to the delay (in milliseconds) of the first live preview.

I set mine to 1 (0 doesn’t work) and it’s instant!