How can I modify the delay time? It currently has no delay and is so frustrating.
I've currently tried to modify
HKEY_CURRENT_USER/Control Panel/Desktop/ActiveWndTrackTimeout
in regedit. Although I was able to modify it, it did not make any effect.
Rename your registry value from ActiveWndTrackTimeout to ActiveWndTrkTimeout. Then sign out from Windows and sign in again.
It seems that this name changed in Windows 8.1.
I had this problem when I upgraded from Windows 8 to Windows 10, and after searching for a while, I eventually found the answer on Super User, so do vote up over there if this helps you!
Also see the Microsoft TechNet reference.
