Recently, a client came to me with a problem where his mouse cursor would freeze for a few seconds after pressing any key on the keyboard in Windows 10.  The delay was driving him nuts, and I empathized with him after using the computer for a short time.

In retrospect, the problem appears to be mostly limited to Synaptics drivers, and only on systems where such drivers are installed and active within Windows 10 (which also features its own “precision” touchpad driver settings).

Fortunately, the solution — while elusive — was simple:

• Search Mouse in the searchbox at the bottom of the screen; Choose Mouse & touchpad settings from the results
• Choose Additional mouse options
• Click the ClickPad tab, then click Settings…
• Click the Advanced tab
• Set the Filter Activation Time slider all the way to 0.

(Note the slider just below the touchpad diagram)

That’s it!