During March 2025, Z. Zhang focused on compatibility engineering within the ValveSoftware/Proton repository, addressing a regression that impacted game stability. Zhang reverted a previous change that had broadly disabled forced Large Address Aware (LAA), instead applying a targeted fix that re-enabled LAA exclusively for appid 1621680. This approach restored expected behavior for the affected game while minimizing risk to other titles. The work demonstrated careful change management by providing a precise, reversible patch with clear traceability. Utilizing Python and software reversion techniques, Zhang improved game compatibility and performance without introducing broader side effects, reflecting a thoughtful, risk-averse engineering process.