I created a GPO called 032917 GPO. Under "The settings in this GPO can only apply to the following groups, users, and computers" I put in the users that I want this GPO to apply to. It's simple, it changes some screensaver settings for the users.
When I log into that user's computer with their credentials, I don't see that any screensaver has been applied to their profile. I've run GPUpdate from the CLI, logged off and back on again, and even rebooted with no luck.