TuneUp SystemControl
Behavior > Input Options > Mouse Sensitivity

Mouse Sensitivity

Under Mouse sensitivity, you can specify how much you can move the mouse when double clicking, and how far you have to move the mouse to start dragging an object. This value is indicated in pixels, the default is four. You can try out your new settings on the Test icon.

You can also change the Movement tolerance and the Hover time for your mouse under the hover settings. The hover effect is activated when your mouse pointer remains over an icon for a specific period of time. A test icon can also be found here to try out your settings; it lights up as soon as the mouse hovers over it.