Windows 7 Alt+Tab transparent windows effect delay

Solution 1:

Okay I've found the answer. Someone was kind to share some knowledge on my post at the Microsoft forum:

Open Registry Editor and create the following registry key:

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.

Restart Explorer to see the changes.

Other Aero-peek related registry entries that I've found on the net are:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

• DesktopLivePreviewHoverTime
• ThumbnailLivePreviewHoverTime
• ExtendedUIHoverTime

These control the delay of other components of Aero-peek.

Solution 2:

This free product might solve your problem : Desktop Peek Tweak. I quote:

This is a quick utility to adjust Desktop Peek delay time when you hover the mouse over the appropriate button on the desktop