Since caching based on lmdb was introduced, performance degraded massively. Visible even in htop: with cache - very low CPU utilization https://github.com/user-attachments/assets/8d09c67a-cb7b-4a95-8cce-c56e85c5b724 <img width="2536" height="1253" alt="Image" src="https://github.com/user-attachments/assets/a8d21566-4888-46c3-b793-6953a20f024c" /> without cache <img width="2536" height="754" alt="Image" src="https://github.com/user-attachments/assets/ec6b33b1-d9b6-4e59-b2b3-ab3f35d45a36" /> If we don't catch performance regressions during development, we need more CI tests for this.