In my experience, earlier AMD cards do have issues with partial or completely invisible ships, or lighting issues. I had a 5770 before and I had issues all the time. Often I would boot up a new build and things would work properly, then close it, then boot it again and the problem would return. Sometimes I could use a build for a few weeks before it failed. A year ago I upgraded my entire hardware package, tower and all. I replaced it with an RX 570 and the problem went away.