Unclutter its a program which helps you hide the cursor after a set time of no mouse activity.
This time amount can be configured on your system by editing this file:
and changing the line:
EXTRA_OPTS="-idle 1 -root"
to a higher number, like 5 or 6:
EXTRA_OPTS="-idle 6 -root"
This will make Unclutter wait for 6 seconds before hiding the cursor from view.