Vision is not particularly high-bandwidth. It just creates the impression of high-bandwidth because it is directed. You only take in a tiny fraction of what's around you, but because you can direct your attention at arbitrary things and refine your impression of them, it feels like you are seeing a very rich picture. You're actually just drawing your own very personal path through a very rich scene that you can only see a tiny piece of at a time, and, like OP you are filling in most of the details from your imagination.

There are things around you which are plain as day, but which you will never see, because you will never think to look at them.