Launch Regedit and click on the 'Find' menu search for WaitToKillAppTimeout. The default is 20000 milli seconds, my challenge is to try a shorter timeout, say about 5000 (5 seconds).

As you may guess from the name this sets the timeout on processes that are hanging. Technically this an interesting hack as you have to set it two or thee times in the registry - keep pressing F3 (Find next). The reason is that this setting is found on the Current user, Default user and maybe another user where you see a SID value. Point to learn :
* Particularly with the HKEY_USER registry settings, you have to make the changes
three times; remember F3 to 'Find Next'.
* Time values are in milli seconds e.g 1000 = 1 second