This is the first tv i have had in 10 years so this new stuff like drc is unkown to me. From what i understand it effectively doubles the number of horizontal lines.The effect is very noticable since i have 36nx200 and the lines are quite visable from a couple of metres away when watching scenes which are light in colour. upon switching to Drc50 the improvment is jaw dropping, there goes the saying you should not buy a big tv if the viewing distance istoo close to the tv. but heres the issue, when i switch to drc 100 the lines are back and there is no noticable difference between drc off and drc 100. If there is any change its in the refresh rate, the 100hz kicks in but no doubling of the lines.Is that the way it is supposed to be, like i have a choice double lines vs 100hz. Should i call out an engineer/call sony support ?