Ancient Engravings of Neptulon

Okay, I’ve been at this for about an hour now and I still cannot complete the quest because I can’t find a certain engraving of Neptulon. I’ve collected a large number of engravings from rubble but not the one that finishes the quest. Is there a trick to it, or is it just a stupid time-waster?

So you’re only getting Illegible Tablet Fragments after an hour? Is there any chance that you already have 4 stacks hiding in your bag? Otherwise it might be a bug tbh. This person finished it in a couple of minutes:

I watched the video, the player must have been lucky. My inventory is full of fragments, but not the right one. Unless the ‘Start a New Quest’ that I found in my inventory was it. It wasn’t the fragment but it was an item to start the quest, and in my annoyance I right-clicked on that and suddenly I had the fragment and the quest ended. Surely that wasn’t how the fragment was supposed to be found. That which I clicked on wasn’t the quest “fragment”, it was supposed to begin the quest that I was already in.