Don't think of your IUOC as more mature. Think of it as a digital computer implemented in something like a cellular automaton. We know this is possible because these things have been studied by mathematical science here in PMR. One limitation on intelligence here in PMR is thus your IUOC's ultimate capability to 'think'. In addition there are limitations that can ultimately be related to the PMR rule set and what limitations may have been set up for you in this incarnation. So your FWAU, as your modified or limited IUOC capabilities for this incarnation, can result in your being able to only effectively exhibit a lower level of intelligence than might be inherent to your IUOC if it were unrestrained.
Another aspect is that there is evidence that your IUOC possesses a digital neural network which gives you the personality types as studied by Dr. David Keirsey, author of the book Please Understand Me II and introduced here on the board years ago by Tom Campbell. If you will look in the second forum showing a symbol of a black padlock on the Index page, you will find a link to download a paper I wrote explaining this. Specifically I am referring to the difference between those who are either Artisans or Guardians personality types who have greater access to the sensory (S in the terminology of types) perceptions of humans versus the Idealists and the Rationals personality types who have greater access to the iNtuitive perceptions of humans. What this means is that those who are iNtuitive have a stronger access to a capability of our IUOCs to manipulate and draw conclusions from much larger blocks of data than we as avatars can and can receive the results of this analysis without the details from our IUOC providing a type of what you might call intelligence also.
All humans have intuition but the Idealists and Rationals have the stronger iNtuition while lacking the stronger access to Sensory perceptions. So Idealists and Rationals can't do as well as dancers, musicians and other performers or managers of teams or societies but they can have insights from iNtuition from their IUOC which allow them to solve problems that are beyond normal human concepts. Effectively extending their intelligence as defined as the ability to understand things or solve problems.
Any unusual terminology in this description is defined and explained in that referenced book and paper.