That’s VGA, it’s gonna be fine. Most wires are either ground or not used for actual image data. R, G and B are analog so noise on those just makes the output noisy, no big deal. That leaves us with HSync and VSync. They are digital signals with 3.3V between on and off and only a single pulse per line / frame so they’re also pretty robust against noise.

So unless you’re going for an extremely high resolution on a really cheap monitor over a long distance, the worst that will happen is that your image will look grainy like TV static. It would take quite a bit of interference before the sync signals degrade enough to not get any image at all.

So unless you’re going for an extremely high resolution on a really cheap monitor over a long distance

Speaking of “extremely high resolution on a really cheap monitor,” it took a solid decade and a half before I was able to buy a digital flat-panel monitor capable of resolution comparable to the analog CRT I was using in 2002. VGA was no joke!

(The only problem with QXGA on a 19" CRT, aside from the weight and power draw, was that in a world before deceent high-DPI fractional scaling the text was too tiny to read easily. Other than that, it worked fine.)

Yeah, same here. I had three 21" trinitrons with a max res of 2046 × 1536. I did finally move to LCD monitors when I was able to get something close (1920x1200), but I still miss those things. Except for the massive weight, space, power draw, and heat they put out of course.