Hello,

The terminator artifact problem is present in Octane, I tried some tests thinking that might be the problem, but it doesn't make sense that when I switch to different materials in Octane the problem goes away using the same model, does it?

I'll have to disagree with you about it not being a bug in Octane. Like I said previously I have posted the issue on the forums, and have heard nothing from the developers. I get the indication that the developers are aware of the problem, but choose to ignore it. In fact, there are numerous examples on the Octane Render forums with similar faceting in transparent materials present in objects created in modelers other than MoI. Just because someone doesn't complain about a problem doesn't mean there isn't a problem. Some of the more vocal users on the forum gave the same lines that you are typing, not enough mesh density, smoothing problem, problem with the model, which leads me to believe these users are not interested in insisting on a fix, they choose to ignore the error as well.

In short, this problem is not user error, it is an Octane error. I realize it is in beta, so hopefully someone over there will come to their senses and squash the bug causing this. I'll agree with you that it is a fast renderer, although not accurate at this point. I think the Octane developers are working at a significant disadvantage. I have to think that the Thea developers have a much greater depth of experience in this field, so it is not surprising that they are much further ahead with a relatively slower CPU based, but highly accurate product.