Ah, I was afraid those NPCs would count as wandering, but it explains a lot.
I guess I just picked a difficult seed to determine starting frames for to begin with, as well - I used the generate adjacent seed tool to look at the spreads for the other timer0s, and turns out that the second before mine has a spread with a flawless attack stat and the one after has a flawless HP stat. So it seems the only reliable characteristic to determine frame my off of is 'Mischievous' on the current seed. Also, saving exits you out of the menu, so RNGing a starter is indeed difficult, unfortunately... though out of sheer stubbornness I'm going try a few more times and see what happens. x_x
Outrage, I'm curious, are you hitting those frames in the hundreds after waiting a few seconds, or is that right after you boot the game and talk to Bianca? I want to retry my process with a different seed but I've no idea what to shoot for, since it seems I've gotten from as low as the 50s to as high as the 100s depending on how long I wait.