I eventually ended up removing my slicer (Chitubox basic) and install the latest and greatest after cleaning up my profile. So literally starting anew.
Aside from changing te resin, I didn’t modify any other settings to begin with, so my config was rather vanilla.
After taking these steps (and cleaning the z-axis and replacing the nofep again) everything seems to be working fine now.
Cleaning the axis and a new nofep didn’t seem to do anything, so I think it was just a crappy version of the slicer.