Samsung UN55ES8000G E-Manual page 271

AllShare Play file formats" in the
Other Information section.
Resolution supported for HDMI PC mode
for LED 7000 series and above
The optimal resolution for the HDMI PC
mode is 1920 x 1080.
If the input resolution is not 1920 x
1080, the TV may not display images
properly in 3D display or full screen
mode.