Turtl stores all notes in what amounts to Chrome's IndexedDB engine (encrypted...no plaintext data is stored on disk). So it really comes down to the efficiency

Turtl stores all notes in what amounts to Chrome's IndexedDB engine (encrypted...no plaintext data is stored on disk). So it really comes down to the efficiency of IndexedDB's storage engine when translating notes to disk space. We do utilize multiple core when encrypting/decrypting, but things like indexing and searching all take place on the same thread the app runs on. This is something that could be improved in the future.