/diy/ - Do It Yourself

For the first time in years, I'm having an issue I don't know how to solve and don't know what is causing it. I'm trying to print a small model at .1mm layer height and every damn time I've tried, it starts failing to extrude at almost the same place. If it was the same layer, I'd suspect the GCode. What happens is I get loss of extrusion (with the exception of two of these, which detached from the bed, THEN got loss of extrusion). The filament extrudes fine by hand, but whenever it "jams" I can no longer push it through by hand and pulling it out of the extruder is very difficult - the tip is also bulged, but it's smooth. The damndest thing is I was getting consistent prints with Bronzefill a few days ago, and now I can't even print simple PLA.

Temps are 190-215 / 60. Picture is a little bit over-lit but I can take another one if it would help. What's going on?