So, I have a scene with multiple movie textures playing simultaneously, and I cannot get them all to play in the viewport (as the only way I know of to get one to play at all in the viewport is to have the UV/Image editor open, and also to be in Texture or Material shading view).
However, (and I may be wrong about this), it seems as if they will not all play during the final render either—a far larger concern.
I'd appreciate an answer to this troubling dilemma. How do I get all of my movie textures to play simultaneously in the final render, and if possible in the viewport as well?
EDIT: This is a very simple setup, simply consisting of a few materials with a movie file placed into an image texture plugged into the diffuse of a principled BSDF.