Pencil tool has become way too "smooth"...overnight

This is hard to explain but here it goes: I've been working on an illustration for about 4 months. My primary tool has been the pencil tool with the fidelity slider set all the way over to accurate. This allows me to get a lot of detail line work in there. I took a break from the piece for the past 3 weeks.

When I opened it up again today and started drawing, the detail and accuracy of my new lines is gone. The lines are smoothish and and way over simplified. I checked the fidelity slider and it's still all the way over to accurate and my other settings are the same as before. Any ideas or suggestions?