I tried 5 different 50' hdmi cables that claimed to pass the 4K60FPS hdr image from my Denon AVR-x6300H and my Optoma UHD65 4K projector including the fiber optic celerity cable and even two HDbaset modules with a 40' cat6 cable and all of them failed to transmit the heavy 4K signal but this Ruipro hdmi cable worked like a charm

The Ruipro support email responded immediately and sent out a new cable

(Receiving New cable from the seller, Totally FREE!!)First of all, I want to thank Amazon for their great services, also I would like to thank the seller (RUIPRO) for his great help and support

It works!RUIPRO sent me a new/updated revision of the cable.