hermanator90,

First, don't try to figure this out. You did not rebuild/create new pathways. Those take months with hundreds of repetitions to 'network' or program.

Second, Just because you are having a good day does not mean you can tackle business as usual. It can be surprising how taxing a simple conversation can be, especially if it is stimulating. Having a conversation with other voices in the background can be the worst. If you try to pay attention (tough with PCS), you may notice some signs before you hit your limit. The foggy brain usually tries to warn you that it starting to fatigue.

Try to link a week or two of good days before you start trying to stretch your limits. The best recovery happens during these extended good periods. Consistency is a better achievement that peak performance.