There's a limitation that the game can only remove 1 follower each second, so if you reroll faster than once every 5 seconds, some of the card will not be removed in time, just hidden. The game will eventually catch on and remove all the hidden cards, although that'll take a while, so in the next few depth the game will become pretty slow. I'll probably find a way to solve this by full release, although it's not at top priority atm.
Distributing really high stats is another bug fixed during steam playtest. But unfortunately we decided to only update itch build after next fest is over, so that we don't undermine our next fest performance :( The content and fixed will eventually get here
Scene transition time will get its own speed option in the full release for sure!