[epakai]

I played with a negative ion generator at my desk, and it was great at knocking out my 1440p monitor signal, but the 1080p seemed more resilient.

Since then I got a 4K display, and it likes to drop out in thunderstorms. I switched to a better DP to HDMI adapter, and the chunky original Samsung cable. I'm waiting for the next storm to see if it helps.

[wil421]

My hdmi cable causes my headset dongle’s range to significantly decrease. From like 50+ feet to 10.

[docjay]

It’s not properly shielded. If you have a multimeter you can do a quick low-hanging fruit pass by checking continuity between the metal shields on both ends. No continuity means no shielding, but the clever assholes will run a thin wire between the shields so it passes that test, even though it’s not actually shielded. That means it won’t tell you if it is shielded, only if it definitely isn’t.

I found a similar issue with nearly all of my cheap USB cables, which I started looking into when I realized only some of them would work right with my camera or Arduino. Out of ~30 cables perhaps 14-16 of them had no shielding at all. I cut open five “shielded” ones and two of them had a thin wire connecting the shields, just to fool people casually testing them. It’s a real crap industry.