This one does. You can configure the noise injected into the signal and when it gets too much, it loses sync and the picture starts rolling. It's actually a software NTSC modulator/demodulator, not just an effect to simulate it.

https://github.com/LMP88959/NTSC-CRT

These are both amazing projects, but why does NTSC-CRT feel more accurate to how I remember television looking than ntsc-rs?

I sincerely appreciate this fidelity to fidelity