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.

Set a registry key at:


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!


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