Win7 system open preview window display speed is too slow how to deal with

            1. Use the Win+R key to bring up the Run dialog, then enter the Regedit command in the Run window;
2. Open the Registry Editor. Then on the registry, locate the path to HKEY_CURRENT_USER\\Control Panel\\Mouse;
3, find MouseHoverTime in the right pane of the Mouse item, and double-click to open the value modification window, the default 400 is changed to 100, The unit here is milliseconds, then click the OK button and then exit the Registry Editor.
This method is very simple, but it can solve our inconvenience. We may not notice this useful function when the function is sound, but once the function is out of order, it will be immediately detected. After the relevant settings, the preview window will be It works fine.