This will modify the Windows Registry. Making an error in doing this can cause Windows to not run. DO NOT do this without backing up your registry or if you are not experienced.
Today we are sharing a small registry trick which can be used to adjust the live preview delay time. You can set the delay time to 1000 milliseconds (or 1 second) to get the live previews faster.
So here we start the tutorial:
1. Type regedit in RUN or Start Menu Searchbox and press Enter. It'll open Registry Editor.
2. Now go to following key:
3. In right-side pane, create a new DWORD value ThumbnailLivePreviewHoverTime
4. Now you'll need to set its value to your desired delay time. Double-click on it and select "Base" as Decimal and enter the desired value. Remember the value should be given in milliseconds. Set the value to 1000 for best experience.