So idk when i'll be able to post the screenshots, cause they were taken on my new laptop with onedrive backup bs.
But basically, there were times when my tanning tub was 100% full of water and tree bark, (i made sure every actively every 20 minutes or so while i was playing from morning to evening), and some skins such as a rabbit skin were taking forever to turn to leather. They honestly looked frozen, that white timer on the item sprite was stuck. 20 minutes later, same place. 1 hour later, same progress or like barely anything. i had other skins finish up while one or two would just be that way. I'm sure that in those screens, i showed the skins that progressed normally next to the other ones in the same tub didn't. One was a foxhide too at some point