TPU, The Devil's spawn of filament. Calibration woes

Well, based on the feedback here and out of complete curiosity as well as the need to print another part, the 200g spool has been laying around in my office since the start of this post with 40% RH in the air. It had plenty of time to suck up moisture. I did nothing different with these two prints except one thing and look at the results side by side.

So you might be wondering, what was the difference if the two were printed sequentially.

The sole difference was that one on the left was printed using 0.28 layer height and the one on the right was using 0.08 layer height.

So it would appear that layer height may also affect the print. That is something I am still trying to wrap my head around.