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Join Date: May 2004
Location: Bull Mountain, OR
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BJC Premium High Speed HDMI cables are certified (ATC) up to 15', even tho the max certification distance is currently 25' and 30' in some cases. I have never seen verifiable data that indicates a problem using shorter length passive HDMI cables (2' - 10'). As long as your cable has the QR label for authenticity you know that it has gone thru a rigorous, standardized testing protocol to meet all HDMI 2.0b hardware specifications for the length tested.
If there is a shorter cable length issue then HDMI 2.1 is going to be in trouble because HDMI.org states that the maximum length for HDMI 2.1 tested cables is 2M to 3M (6' to 9').
BJC sells Premium High Speed HDMI cables in lengths starting at 1' in 1' increments up to 10'.
As to OP's issue, if he's using a cable that is longer than about 20', and with an extender/booster at the end, that's probably his issue. 4k HDR is very unforgiving so the best connection is a single cable, source to sink, with no additional hardware at the end (switches, boosters, extenders, etc). They can work but most folks have issues sooner or later. HDMI chipset versions also play a key role in a successful cable connection. Hybrid fiber cables seem to be the cable of choice now for long 4k HDR runs.
The purpose of the QR label, in addition to verifying that the cable as been properly certified is that the label is counterfeit proof. Just scan it with your phone to check.
Last edited by Otto Pylot; 09-09-2018 at 10:56 AM.