A digital signal arrives at the destination unmodified, this is guaranteed by the error correction algorithms used.
In short, HDMI cables either work fully or not at all, there is zero difference between cables beyond that.
Sorry dude, it's called confirmation bias. You hear stuff you want to hear, like thinking a more expensive wine tastes better than some cheaper one, based on price alone. Fortunately, where digital signals are concerned, you really can state without any reservation that the signal you get out is exactly the same as what you put in, nothing more nothing less. If you still think theres a difference, it's just the keebler elves whispering in your ear.