How to set the single click speed?

[Colin Law]

On 19 January 2016 at 18:19, Jim Byrnes <jf_byrnes at comcast.net> wrote:
> I moved from Ubuntu 12.04 to 14.04 and find I have trouble getting drop down
> menus in the title bar to drop down.
>
> If I click on a menu as I normally do it just flashes briefly but does not
> drop down.  To get it to drop down I must tap and release the button very
> rapidly.

Does the mouse behave perfectly in all other situations?

Colin