We take a small break from the story during the 12th episode to try our hand at perfect hunting. In my first ever use of Potent Scent, not only do I find some potents, but I do end up finding the perfect I was looking for, Gauslime!
Chapters:
0:00 Potent Scent / Hunting
19:58 Perfect Gauslime Appears!
source
I found a Perfect Gauslime in the last frame of my scent being active.
Finally got mine after bout 5 to 6 soft resets.