Ambilight is only after update correctly (could not represent red).
2K does not go with 60hz
If the unit must via HDMI switching between different resolutions (zbsp. If a PC via HDMI 2.0 is attached) rushes the TV regularly. It often helps just to unplug the power cord.
The Support reads the mail not properly represents always the same questions and advises to wait until the update although not known what error be corrected there. Who can do without uf Ambilight is at t he competition better served (Samsung, Panasonic).
The illumination is irregular and in bright image even he flickers and always crashes. In this price range a cheek.