Hi Milan, > Are there any tricks to speed it up?
I noticed org-drill being slow three years ago when I tried to learn it. So I wrote my own package: https://github.com/abo-abo/pamparam/. It's quite fast: it takes 0.6s to sync my 3300 cards from the master Org file. And day-to-day learning operations like building a schedule or fetching a card are instantaneous. The master file is relatively small, since it stores no metadata: less than 10000 lines. The metadata is stored per-card, each card is in its own file. The whole thing is backed by Git. All your learning sessions are stored in commits as well. Check it out. It might have less features, but it's really fast and has served me well. regards, Oleh
