If you aren’t running at 1920×1080 you aren’t running at “Full HD” and if you aren’t running at “Full HD” you are experiencing Visual Artifacts whether you know it or not. View this Video in 1080p and you will be able to tell if you are seeing artifacts or not.
This is true for Televisions, Projector, Monitors, and Laptops.
Visual artifacts are anomalies during visual representation of e.g. digital graphics and imagery.