[Bug] Missing visual fx on Prometheus (cave markings/giant laser)

I've been playing on a dedicated server, so I don't know if that's the cause but there are no cave markings on the final mission and the giant laser for the mission before also doesn't show. I play on max settings, my friends on various lower settings, none of us saw the visual fx and we did back when prometheus released.

The first cave marking on the last mission (outside the cave) is visible, but if i look at it and pass over the cave threshold, it disappears, none of the other markings load. It really ruins the impact of the final elements of the story. Even the glowing plants don't glow. Everything else looks fine, the audio plays, the objectives trigger, but the cave is just a plain cave. The laser doesn't fire on the mission before, all the items in the area just disappear. Which is a little less obvious that it's time to run as there's no charging.