Interesting as I am pretty sure that unit uses an IPS screen and off angle will be the best you can get with LCD. On the other hand the IPS screens do not have the best blacks. The uniformity issues come from it being an edge lit set. Post some pics and we can tell you if it is to much or what is average.
I have the same unit coming to me for a work project suppose to be delivered tomorrow so I can tell you what I see also.
Current Sets: Sony XBR65A9F Master Series, Sony XBR75X940C, Sony XBR75X940D, Samsung UN65KS9800, TCL 65R617
Previous Sets: Samsung Q9FN, Sony XBR65X930D, XBR65X900B, XBR49X830C, Samsung KS8000, KU6500, UN55KS8500, UN49JS8500, JS9000, JU7090, JU6500, JU6400, HU9000, HU7250, PN64F8500, Vizio P65, LG 65EF9500, LG 55EC9300, Hisense 55H8C, TCL P-Series (55P607)