The Samsung UBD8500K player outputs UHD at 60hz with 4:4:4 color depth for it's menus...it's using the FULL 18Gb/sec bandwidth of HDMI 2.0. Active cables WILL NOT WORK with this player! Nor will Cat5/Cat6 extenders! For best results use a quality PASSIVE HDMI cable that is less than 20 feet long. If running longer lengths you will need to get a fiber optic HDMI cable. (Celerity makes an affordable one, Tributaries also offers some as well, at much higher prices)
If you get it up and running, though, you will find that the effort is worth it! I recently was able to preview both Mad Max and The Martian on UHD Blu-Ray, displayed on a JVC RS-600U "E-Shift" 4k projector...and the picture was OUTSTANDING! Highly recommended to anyone with a UHD TV or projector!