Yes yes and yes. Especially if it's Extra Virgin Olive Oil. All three of my batches so far have taken take 2-4 hours to trace, and they are all extra virgin olive oil heavy. It really is disconcerting at first, when all tutorials tell you it will trace in less than an hour if stirring by hand, and in a few minutes with powered stirring. I like to think my soaps are special because not many others would be willing to wait for so long to reach trace, so they just use pomace olive oil instead. I like the longer trace time, it gives me more time to prepare the molds, add smells and spells (after a light trace), etc. I feel like it's lower pressure. I don't kill myself either by trying to mix it for 3 hours straight. I just mix for 5 to 10 minutes, then let it sit for an hour, then mix again for a few minutes, and repeat.