

Ex: If you want to delay thumbnail preview for 2 seconds, type 2000.Ĥ.

Before editing, I recommend you back up the registry to be safe. Like I said before, we need to make a simple registry change to speed up or slow down thumbnail previews on the taskbar. Change Taskbar Thumbnail Preview Hover Speed or Time So, without further ado, let me show how you can change taskbar thumbnail hover speed in Windows. On the other and increasing the delay will reduce the chances of accidental thumbnails. Simply put, reducing the time it takes to show the thumbnail on the taskbar will make your system appear much snappier and responsive. That being said, with a simple registry edit, you can either increase or decrease the time it takes to show thumbnail when you hover over a taskbar application icon. The same is applicable when you want your system to feel responsive and snappier.

However, when you are in a hurry to change a track or see a quick preview, that half a second can be too long. For most people, it is not that much of a delay. This delay is a design decision by Microsoft to reduce accidental hover thumbnails and thumbnail actions. To show the thumbnail preview, it takes around half a second after you hover over the application icon.
