Thanks to our first players for the feedback — a hotfix is already live:

1.Fixed saves being shared between Steam accounts on the same PC (each account now has its own save; existing saves migrate automatically, no progress lost)

2.Fixed stutter when entering the final boss fight

Fixed seam artifacts on some monster animation frames, the card viewer scrollbar style, duplicate-name display on leaderboards, and more
More reported issues are being tracked down. Keep the feedback coming!