When the machines are initially receiving steam, the effect leads to incredibly pronounced flickering; as can be seen in the attached video, provided it is actually attached properly (obvious flashing warning should you choose to view it)

I am unsure if this occurs with every machine type as I have only done basic MI progression in my world.

I believe the way they were setup is that they became emissive when active. I'll need to double check how the active textures are named and if needed I'll change them. Granted, if you're providing so little steam, it's time to kick up the steam production a notch or two.