DelayedDesktopSwitchTimeout - slow login

I was perplexed about the slow logon process of WIN8 considering the fact that it starts from an SSD.
I have Fast-Boot disabled. The login windows comes up really quick, but after signing in it seemed annoyingly slow to me, like it was waiting intensionally 30 seconds for some cup of coffee before the desktop shows up.
I've googled a bit and found this, and old WIN7 bug still seems to be valid with WIN8:The Welcome screen may be displayed for 30 seconds during the logon process after you set a solid color as the desktop background in Windows 7 or in Windows Server 2008 R2
Even though I use a wallpaper background, the workaround with the registry hack solved my slow login times. Now logon is as fast as I expect it.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
create a new DWORD called DelayedDesktopSwitchTimeout and set its value to 5.

It might take several boot up's to work, but after 4 times it worked for me.

Do it on your own risk.
Can someone confirm...?!

better re install the windows