Premium channels poor quality - Time Warner TV

This question is about "Premium channels poor quality", with Time Warner Cable TV and apps. Id like to know why the channels I pay a heafty price for (hbo, cinemax, showtime, starz, epix etc.) look worse than the channels that are essentially free in every package e.g. locals fox, nbc etc.
The PQ I get from the local channels is beautiful, bright and sharp with little noise. The high priced channel are extremely noisy and often dark and lacking highlights with poor color definition.
How do I fix this other than changing providers?

This topic covered Premium channels poor quality, and TWC cable tv service.