Have you recently deleted a big 'ol clunky SRS deck to free up some time? Maybe you deleted a bunch of flash cards to spend more time in context, or just to relieve some pressure. For whatever reason, if you have destroyed a nice chunk of SRS data, please tell us about it in this thread. This is a cause for celebration, and not regrets. I just deleted all the cards in my Russian Anki deck older than 1 month, and I feel great! It came to about 3000 cards. Reviews were getting to be about 60 min. All my other combined reps add about 20-30 min per day, so I really want Russian to be about 30 min. If you ever try this out, you'll notice it takes a couple weeks for the number of reviews to go down. This is because you kept all of your high-rep (new) cards. But they do go down, and quite steadily, so no worries. My state of mind now is a far cry from when I first deleted my huge Supermemo collection about 8 years ago. I had well over 20,000 cards, and I deleted the whole thing. I sort of went into shock for a week or two, thinking I had made a huge mistake. But the soothing feel of freedom eventually chased off all the bad thoughts, and i realize I had made the right choice. For me, there is a time to use an SRS and a time to stop using it. In addition, there are times to adjust and fine tune my usage. I'm curious about other people's experiences.