In January 2025, B. Diler delivered two targeted performance refactors across the ppy/osu-framework and ppy/osu repositories, focusing on reducing memory allocations and simplifying string parsing logic. Working primarily in C#, Diler optimized data filtering by removing unnecessary char array allocations in SearchContainer, and refactored the ManiaHitObjectComposer and OsuHitObjectComposer to eliminate redundant ToArray() calls after string splitting. These changes improved runtime efficiency and code maintainability without altering existing behavior. Drawing on skills in code refactoring and performance optimization, Diler’s work enhanced the extensibility of core game development components while maintaining a low-risk profile for future updates.