The picture quality has improved somewhat through the cable compared to the previous double-shielded cable. If you have not just installed a very low-grade cable, so you should expect any miracles.
Nevertheless, this is a cable for all who value höchte quality and the best Aspect want to get on TV. After all, it is useless to connect the TV and receiver with an expensive HDMI cable, but neglecting the signal on the way to the receiver.