LG 55LH90 Great tv but cable needs to catch up with technology

The picture on this tv is breathtaking, best I have experienced. The only problem is that the feeds from cable are not of a high a quality needed. Basically the tv shows up minor flaws and has some pixelation issues when watching on cable, when watching on a blu ray dvd there are no such issues. Some channels are worse than others, but I guess this is the problem with being an early adopter.