In October 2025, Ki Stfu enhanced the JetBrainsRuntime repository by implementing configurable per-directory buffer sizing for Windows WatchService. Using Java and Java NIO, Ki introduced a new system property that allows operators to tune the buffer size for file system event monitoring, addressing the risk of OVERFLOW_EVENTs in large or heavily loaded directories. The solution included robust input parsing and validation, defaulting to a safe value when necessary to maintain reliability. This work demonstrated a focused approach to system properties and file system monitoring, providing greater predictability and control for file-watching tasks while preserving backward compatibility and operational stability.