Second panel question. Maciej: talk to the business — fix what causes pain — and keep a personal heuristic of investigating any request slower than 1 second that you touch. Stephen: time-box exploration (10–30 minutes) to find highest-leverage opportunities rather than diving straight into optimization; his own bottlenecks are always at the view layer, never the DB. Caio: understand the business and user context, check layers above the backend (front-end, network) first, find low-hanging fruit, and connect performance to metrics/feature usage — sometimes the right fix is deleting the feature.