Signal Interference with Bitfunx component cables?

[ss_lemonade]

So I ordered these bitfunx cables recently. I would have picked up component cables from a different manufacturer but these seem to be the only ones that are readily available. The overall picture quality looks really good and is a significant step up over composite (my CRT doesn't really look good with composite, so there's that too) but what's the deal with these faint lines that move up or down? They are only visible against dark scenes, so they don't bother me too much at the moment. See video below (the lines are more visible at the video's highest resolution) to see the horizontal lines moving from bottom to top

https://youtu.be/LELL9cb4fhs?si=KwMEM916a_ivPJJY

Also, what's the relationship between my Dreamcast's fan and these lines? If you look at the video, at around the 00:12 second mark, the lines start to move rapidly in the opposite direction until they become invisible if I block the DC's fan vent with my hand. In fact, I could control how the lines move and even make them stop depending on how I cover up the vent.

These lines only appear with the bitfunx cables, so I'm assuming it has something to do with quality of these component cables. From what I could tell, they don't appear either with composite or a hyperkin HDMI cable.

[Greg2600]

There's a bunch of potential causes, did you try it on another TV?

Maybe this applies to you?
https://shmups.system11.org/viewtopic.php?t=65350