The Sentry team has improved their weekly report emails by reducing the time it takes to send them from almost 16 hours to around 8 hours, saving over 27 days of computer time per year. The change was made possible by optimizing the architecture to reduce N+1 queries, which allowed for a query that passes in all projects at once. This resulted in a significant decrease in the average time spent sending emails, from 1690ms to 635ms, and ensured that CEST customers receive their emails on time, just before the workday starts. The improved system also includes new features such as a "Most frequent performance issues" section, making it easier for users to identify and address critical latency problems.