Short story:
Any advice what gconf-editor key I need to change to adjust the window maximize / restore animation speed?

Long story:
I have been trying to adjust different animation speeds and I have changed all others than window maximize / restore to my liking. To be specific when I click the rectangle of the window buttons (X _ Rectangle) the animation is too fast to my liking.

I do not want to install Compiz conf or preferably not even dconf since I have been able to set all other animations to my liking with gconf-editor.

Specific answers appreciated