I returned one thinking it was coincidence but the second one was defective as well. Both cables flickered really badly, 1080p was mostly ok, but when I ran 4k 30fps from my PC to my TV in the living room it would cut out, sometimes it was only once a minute but there were spikes where it was once in a few seconds was . I was really hoping that this cable would meet my needs, but unfortunately I have to keep looking. Or find another way to run video signals in my house.