Developed a stability enhancement for the JetBrainsRuntime repository by introducing configurable per-directory buffer sizes for the Windows WatchService. This feature allows operators to adjust buffer allocation through a new system property, reducing the risk of OVERFLOW_EVENT errors in large or heavily loaded directories. The implementation involved robust input parsing and validation, ensuring that invalid values default to a safe buffer size and maintaining backward compatibility. Leveraging Java, Java NIO, and system properties, the work focused on improving reliability and predictability for file system monitoring tasks, enabling environment-specific tuning while preserving the integrity of existing workflows and configurations.